Thus, the waves traveling with a velocity of light and consisting of oscillating electric and magnetic fields perpendicular to each other and also perpendicular to the direction of propagation are called 7. In the modern world, humans are surrounded by EM radiations. The great scientist, was the first man to investigate how to transmit and detect EM waves. 8. In his experiment, a was applied to the two ends of two metal wires, which generated a spark in the gap between them. This spark resulted in the of EM waves. Those EM waves traveled through the air and created a spark in a metal coil located over a meter away. If an LED is placed in that gap, the bulb would have glowed. This experiment showed a clear case of EM wave and 9. James Clerk Maxwell (1831-1879) had laid out the foundations for EM radiation by formulating four mathematical equations called 10. The oscillating electric dipole can produce EM radiation in a perfectly sinusoidal manner. In this case, the_ will automatically generate a varying magnetic field perpendicular to it. 11. The wave velocity is_ times_ Based on this relationship, when frequency goes up, then the wavelength goes down.

Answers

Answer 1

Based on the information, the correct options to fill the gap will be:

electromagnetic wavesscientisttransmission, propagationMaxwell's equationselectric field, magnetic field, the speed of light, the wavelength

How to explain the information

Electromagnetic waves are waves that travel at the speed of light and consist of oscillating electric and magnetic fields. The electric and magnetic fields are perpendicular to each other and also perpendicular to the direction in which the waves propagate.

When a potential difference (voltage) is applied to the two ends of two metal wires, a spark is generated in the gap between them. This spark results in the creation of electromagnetic waves.

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Related Questions

Which one of the following is NOT equal to the potential energy stored on a fully charged capacitor with a capacitance of C farads, connected to a battery of V volts, and holding Q coulombs of charge? X A. (Q.V) joules A volt is a joule per coulomb, so multiplying volts by coulombs yields joules. X B. 1 2 (2) joules C A volt is a joule per coulomb, and capacitance is expressed as coulombs per volt, so dividing the square of coulombs by farads yields joules. A volt is a joule per coulomb, and capacitance is expressed as coulombs per volt, so multiplying farads by the square of voltage yields joules. 1/2 ( 7² ) joules volt is a joule per coulomb, and capacitance is expressed as coulombs per volt, so dividing the square of farads by volts yields coulombs to the fifth power divided by joules to the third power, not joules. X C. (C.V²) joules O D. 1 Detailed Guidance Send us feedback. Feedback Info Capacitors behave according to the equation: C = Q V where C is capacitance in farads, Q is charge in coulombs, and Vis volts. Since a volt is defined as one joule per coulomb, the charge leaving a discharging capacitor has energy of Q. Vcap joules. The voltage of a fully charged capacitor is equal to the voltage of the battery that charged it, but when the capacitor is almost completely discharged its voltage is essentially zero. Because of this, the actual energy stored on a capacitor is equal to (1/2)(Q Vbatt). Each of the answer choices is equivalent to this value except (D), which, because it does NOT represent the energy stored by the capacitor, is correct.

Answers

The potential energy stored on a fully charged capacitor with capacitance C farads, connected to a battery of V volts, and holding Q coulombs of charge is not equal to the expression given in option D.

Capacitors store energy in the form of electric potential energy. The energy stored on a capacitor can be calculated using the equation E = (1/2)(QV), where E is the energy in joules, Q is the charge in coulombs, and V is the voltage in volts. The voltage across the capacitor is equal to the voltage of the battery that charged it.

In the given options, option D states that the energy stored on the capacitor is 1 joule. However, this is incorrect. The correct expression for the energy stored on the capacitor is (1/2)(QV), which is equivalent to option A, B, and C. Option D does not represent the energy stored by the capacitor.

Therefore, the correct answer is option D. The potential energy stored on a fully charged capacitor with a capacitance of C farads, connected to a battery of V volts, and holding Q coulombs of charge is not equal to 1 joule.

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A motorcyclist is making an electric vest that, when connected to the motorcycle's 12 V battery, will warm her on cold rides. She is using 0.23−mm-diameter copper wire, and she wants a current of 4.8 A in the wire. For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. A 15μF capacitor initially charged to 25μC is discharged through a 1.0kΩ resistor. Part A How long does it take to reduce the capacitor's charge to 10μC ?

Answers

It takes approximately 18.97 ms for the capacitor's charge to be reduced to 10 μC.

A 15 μF capacitor initially charged to 25 μC is discharged through a 1.0 kΩ resistor. The steps and strategies involved in solving this similar problem are given below:

where q = charge on capacitor at time t, Q = initial charge on the capacitor, R = resistance, C = capacitance, and e = 2.71828 (constant)

To find the time it takes to reduce the capacitor's charge to 10 μC, substitute the given values in the above equation, q = 10 μC, Q = 25 μC, R = 1.0 kΩ, C = 15 μF.

Then solve for t.t = - RC ln(q/Q)=- (1.0 kΩ) (15 μF) ln(10 μC/25 μC)t = 18.97 ms

Therefore, it takes approximately 18.97 ms for the capacitor's charge to be reduced to 10 μC.

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A2.3 kg wooden block is rest on a frictionless surface. A 25 g bullet traveling horizontally with a speed of 800 m/s penetrates and moves together with the wooden block. What is their velocity in m/s? 620 5.52 708 A stone is dropped from the top of a cliff. I is scen to hit the ground below after 9.3 seconds. Hong high is the cliff in meters? 415 433 424 442

Answers

The velocity of the block and bullet is 5.52 m/s.

Given data: Mass of the wooden block, m1 = 2.3 kgMass of the bullet, m2 = 25 g = 0.025 kg Velocity of the bullet, u = 800 m/sVelocity of the block and bullet, v = ?As the bullet penetrates the wooden block, the momentum of the system remains conserved before and after the collision.

Let u1 be the initial velocity of the block before the bullet hits it. Then, by conservation of momentum,m1u1 + m2u = (m1 + m2)v∴ v = (m1u1 + m2u) / (m1 + m2)Initially, the block is at rest. Therefore, u1 = 0. Substituting the values in the above equation, v = (0 + 0.025 x 800) / (2.3 + 0.025)≈ 5.52 m/s. Therefore, the velocity of the block and bullet after collision is 5.52 m/s. Hence, option 2 is correct. Let h be the height of the cliff. Given that the stone takes 9.3 seconds to hit the ground, the time of fall, t = 9.3 s.The stone falls freely under gravity, and the acceleration due to gravity, g = 9.8 m/s². Using the formula for the height of fall, we haveh = (1/2) × g × t²Hence,h = (1/2) × 9.8 × 9.3²≈ 415 m. Therefore, the height of the cliff is approximately 415 meters. Hence, option 1 is correct.

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A chair of mass 15.0 kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F=42.0 N that is directed at an angle of 43.0 ∘
below the horizontal and the chair slides along the floor. Use Newton's laws to calculate the normal force that the floor exerts on the chair

Answers

The normal force that the floor exerts on the chair is approximately 107.9 N.

Mass of chair, m = 15 kgForce, F = 42.0 NAngle, θ = 43°Normal force, N is given by,Newton’s second law of motion states that the force acting on an object is directly proportional to the acceleration produced in it and inversely proportional to its mass.

It is given by, `F = ma`Where, F is the net force applied on the object, m is the mass of the object and a is the acceleration produced in the object. When an object is in contact with a surface, it experiences two types of forces:Normal force (N)Frictional force (f)According to Newton’s third law of motion, the normal force acting on an object is equal in magnitude and opposite in direction to the force applied by the object on the surface in contact.

Hence,Normal force, N = Force applied by the object on the surface in contactLet N1 be the normal force acting on the chair. From the free-body diagram of the chair, we can write,N1 + Fsinθ = mgwhere, m is the mass of the chair, g is the acceleration due to gravity and Fsinθ is the component of force F acting parallel to the surface.

Substituting the given values in the above equation, we getN1 = mg - Fsinθ= (15 kg) × (9.8 m/s²) - (42 N) × sin 43°≈ 107.9 N.

Therefore, the normal force that the floor exerts on the chair is approximately 107.9 N.

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the resistance of a 60cm wire of cross sectional area 6 x 10^-6m^2 is 200 ohms. what is the resistivity of the material of this wire

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The resistivity of the material of the wire can be calculated using the formula: resistivity = (resistance x cross-sectional area) / length. In this case, the resistivity of the material is 3.33 x 10^-7 ohm-meter.

The resistivity of a material is a measure of how strongly it opposes the flow of electric current. It is denoted by the symbol ρ (rho). The resistivity can be calculated using the formula ρ = (R x A) / L, where R is the resistance, A is the cross-sectional area, and L is the length of the wire.

In this case, the given resistance is 200 ohms, the cross-sectional area is 6 x 10^-6 m^2, and the length of the wire is 60 cm (or 0.6 m). Plugging these values into the formula, we get ρ = (200 ohms x 6 x 10^-6 m^2) / 0.6 m = 2 x 10^-3 ohm-meter.

Therefore, the resistivity of the material of the wire is 3.33 x 10^-7 ohm-meter. The resistivity provides information about the intrinsic property of the material and can be used to compare the conductive properties of different materials.

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Find the magnetic-field’s strength using information below
R_coil= 0.19m, current=1.3A, N=130
*3 decimal places/in milliTesla

Answers

The magnetic-field strength is 0.579 mT in milliTesla. Magnetic field strength is the force experienced by a moving charge in a magnetic field.

The magnetic field strength equation is given by

B = μ * I * N / 2 * R

Where,

B is the magnetic field strength

I is the current

N is the number of turns in the coil

R is the radius of the coilμ is the permeability of free space.

The given values are

[tex]R_{coil}[/tex] = 0.19m

current = 1.3A

N = 130

Substituting the given values in the formula, we get

B = μ * I * N / 2 * R

R = 0.19m

N = 130

I = 1.3A

Magnetic field strength = B = (4 * π * [tex]10^{-7}[/tex]) * 1.3 * 130 / (2 * 0.19)

On solving, we get

B = 0.579 mT

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How is the work done by the person related to the answers in parts A and B?
1. The work done by the person in lifting the book from the ground to the final height is the same as the answer to part A
2. The work done by the person in lifting the book from the ground to the final height is the same as the answer to part B

Answers

Neither statement accurately describes the relationship between the work done by the person and the answers in parts A and B.

The statement "The work done by the person in lifting the book from the ground to the final height is the same as the answer to part A" is incorrect. The work done by a person in lifting an object depends on the force applied and the distance over which the force is exerted, not solely on the height of the object.

Similarly, the statement "The work done by the person in lifting the book from the ground to the final height is the same as the answer to part B" is also incorrect. The work done in lifting the book is related to the change in potential energy, which depends on the mass of the book, the acceleration due to gravity, and the height difference between the initial and final positions. It is not directly related to the answer in part B.

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.1. It takes you 10 min to walk with an average velocity of 2 m/s to The North from The Grocery Shop to your house. What is your displacement? 2. Two buses, A and B, are traveling in the same direction, although bus A is 200 m behind bus B. The speed of A is 25 m/s, and the speed of B is 20 m/s. How much time does it take for A to catch B ? 3. A truck accelerates from 10 m/s to 20 m/s in 5sec. What is it acceleration? How far did it travel in this time? Assume constant acceleration. 4. With an average acceleration of −2 m/s^2
, how long will it take to a cyclist to bring a bicycle with an initial speed of 5 m/s to a complete stop? 5. A car with an initial speed of 5 m/s accelerates at a uniform rate of 2 m/s ^2
for 4sec. Find the final speed and the displacement of the car during this time. 6. You toss a ball straight up with an initial speed of 40 m/s. How high does it go, and how long is it in the air (neglect air drag)?

Answers

1. To find the displacement, we use the formula:

  Displacement = Velocity × Time

  = 2 m/s × 10 min × 60 s/min

  = 1200 m

  Therefore, the displacement is 1200 m to the North.

2. The distance that A has to cover to catch up with B is 200 m. Let t be the time it takes for A to catch up with B. Then the distance each bus covers will be:

  Distance covered by bus A = Speed of bus A × Time = 25 m/s × t.

  Distance covered by bus B = Speed of bus B × Time + Distance between them = 20 m/s × t + 200 m.

  As the buses are moving in the same direction, A will catch up with B when the distance covered by A is equal to the distance covered by B. Therefore, we can set these two equations equal to each other:

  25t = 20t + 200.

  This simplifies to 5t = 200, which gives us t = 40 seconds.

  Therefore, it will take A 40 seconds to catch up with B.

3. To find the acceleration, we use the formula:

  Acceleration = (Final Velocity − Initial Velocity) ÷ Time

  = (20 m/s − 10 m/s) ÷ 5 s

  = 2 m/s^2.

  To find the distance, we use the formula:

  Distance = (Initial Velocity × Time) + (0.5 × Acceleration × Time^2)

  = (10 m/s × 5 s) + (0.5 × 2 m/s^2 × (5 s)^2)

  = 25 m + 25 m

  = 50 m.

  Therefore, the acceleration is 2 m/s^2 and the distance traveled is 50 m.

4. To find the time taken to stop, we use the formula:

  Final Velocity = Initial Velocity + (Acceleration × Time).

  As the final velocity is 0 (since the cyclist is coming to a complete stop), we can rearrange this formula to solve for time:

  Time = (Final Velocity − Initial Velocity) ÷ Acceleration

  = (0 − 5 m/s) ÷ −2 m/s^2

  = 2.5 seconds.

  Therefore, it will take 2.5 seconds for the cyclist to bring the bicycle to a complete stop.

5. To find the final speed, we use the formula:

  Final Velocity = Initial Velocity + (Acceleration × Time)

  = 5 m/s + (2 m/s^2 × 4 s)

  = 13 m/s.

  To find the displacement, we use the formula:

  Displacement = (Initial Velocity × Time) + (0.5 × Acceleration × Time^2)

  = (5 m/s × 4 s) + (0.5 × 2 m/s^2 × (4 s)^2)

  = 20 m + 16 m

  = 36 m.

  Therefore, the final speed is 13 m/s and the displacement is 36 m.

6. When the ball is at its maximum height, its final velocity is 0 m/s. Therefore, we can use the formula:

  Final Velocity = Initial Velocity + (Acceleration × Time).

  As the final velocity is 0 and the initial velocity is 40 m/s, we can solve for time:

  Time = Final Velocity ÷ Acceleration

  = 40 m/s

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Where are the young stars in spiral galaxies? In the disk. In the bulge. In the halo. Question 24 Where are the young stars in elliptical galaxies? In the bulge. In the disk. There are none. Question 25 Where are stars formed in our galaxy? In the halo. In the disk In the bulge

Answers

23. Young stars in spiral galaxies are typically found in the disk.

24. in the elliptical galaxies a few new stars might show up in the bulge

25. Stars are formed in the disk of our galaxy.

What should you know about the Elliptical galaxies?

Elliptical galaxies are generally composed of older stars, with little to no ongoing star formation. This is due to the fact that they have used up or lost most of their interstellar medium. So, there are typically no young stars in elliptical galaxies.

Our galaxy, the Milky Way, is a barred spiral galaxy.

Stars are primarily formed in the disk of our galaxy, particularly in the spiral arms where the interstellar medium is densest.

This is where new stars, including young blue stars and star clusters, are most frequently born. The bulge and halo regions of the Milky Way are primarily composed of older stars, with very little ongoing star formation.

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A 1.4 kg toy has an acceleration of 0.23 m/s2 when pushed with a force. A second toy has an acceleration of 0.75 m/s2 when pushed with the same force. What is the mass (in kg) of the second toy? Hint: Only enter the numerical value of your answer to two decimal places.

Answers

the required mass of the second toy is 0.43 kg.

The given force pushes a toy with a mass of 1.4 kg with an acceleration of 0.23 m/s². We are to calculate the mass of another toy that is pushed with the same force and has an acceleration of 0.75 m/s².We can use the following equation: force = mass × acceleration.

Therefore, we can write the following equations for the two toys:Force = (1.4 kg) × (0.23 m/s²)Force = mass × (0.75 m/s²)Solving the two equations for mass, we get:mass = Force/accelerationFor the first toy, we have:mass = (1.4 kg × 0.23 m/s²)/ (0.23 m/s²) = 1.4 kgFor the second toy, we have:mass = Force/acceleration = (1.4 kg × 0.23 m/s²)/ (0.75 m/s²) = 0.428 kgSo, the mass of the second toy is 0.43 kg (to two decimal places).Hence, the required mass of the second toy is 0.43 kg.

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An ultra-fast pulse lasers emits pulses of 13 fs. The length of each pulse train is: A) 7.79 pm B) 3.9 pm C) 19.49 pm D 11.69 pm ) E) 3.9 pm Air

Answers

An ultra-fast pulse lasers emits pulses of 13 fs. The length of each pulse train is: The correct answer would be that there is not enough information given to determine the length of each pulse train (option O).

To determine the length of each pulse train emitted by the ultra-fast pulse laser, we need to consider the relationship between the pulse duration and the pulse repetition rate.

The length of each pulse train is given by the formula:

Length of each pulse train = Pulse duration × Pulse repetition rate

The pulse duration is provided as 13 fs (femtoseconds). However, the pulse repetition rate is not given in the question. Without knowing the pulse repetition rate, we cannot accurately determine the length of each pulse train.

Therefore, based on the information provided, we cannot determine the exact length of each pulse train emitted by the ultra-fast pulse laser. The correct answer would be that there is not enough information given to determine the length of each pulse train (option O).

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Considering motion with a constant velocity, what happens to changes in distance during equal time intervals? (1 mark) Considering motion with a non-constant velocity, what happens to changes in distance during equal time internals? (1 mark) You run 100 meters in 15 seconds. What is your speed in m/s? (1 mark) 9. In a race, you run 3000 meters east in 21 minutes. What is your speed in km/min? (2 marks) 10. What is the difference between velocity and speed? Give an example. (2 marks)

Answers

Considering motion with a constant velocity, changes in distance are equal during equal time intervals. Since constant velocity is motion at a consistent speed in a straight line. It is possible to calculate the distance moved from the speed and the time taken.

Distance is equal to the product of speed and time: distance = speed × time. A constant speed in a straight line would result in a uniform change in distance for equal intervals of time.Considering motion with a non-constant velocity, changes in distance during equal time intervals are not equal. Since the velocity changes during non-constant velocity. Therefore the distance traveled in equal time periods will not be constant.

The object could be moving fast or slow, depending on the time interval you’re looking at. If the object's velocity is increasing, then the distance traveled in the same time interval will be greater.Speed is the rate at which an object travels from one place to another. It can be calculated by dividing distance by time.

In this case, speed = distance/time.100 meters in 15 seconds, speed = distance/time = 100/15 = 6.67 m/sIn 21 minutes, you ran 3000 meters east. To calculate the speed in km/min, convert the meters to kilometers and minutes to hours.

1 km = 1000 m and 1 hour = 60 minutes, therefore 3000 m = 3 km and 21 minutes = 21/60 = 0.35 hours.Speed = distance/time = 3/0.35 = 8.57 km/minVelocity is a vector quantity that indicates the rate and direction of an object's motion. An object moving at a constant speed in a straight line has constant velocity.

However, if an object is moving at a constant speed in a circular path, it is not moving at a constant velocity because its direction is constantly changing. For example, if a car is moving at 60 mph north, its velocity is 60 mph north. If it turns right, it's still moving at 60 mph, but its velocity is now 60 mph northeast.

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A certain dense flint glass has an an index of refraction of nr = 1.71 for red light and nb = 1.8 for blue light. White light traveling in air is incident at an angle of 33.0° onto this glass. What is the angular spread between the red and blue light after entering the glass?

Answers

The angular spread between the red light and blue light after entering the glass is 0.8°.

The formula for angular dispersion is given as;

Δθ = θb - θr Where,

Δθ is the angular spread

θb is the angle of refraction for blue light

θr is the angle of refraction for red light

In this case, the angle of incidence is θi = 33.0°

Therefore,θi = θr (for red light)θi = θb (for blue light)

The formula for the angle of refraction is given as;

θ = arcsin(sin θi/n) Where,

θ is the angle of refraction

θi is the angle of incidence

n is the refractive index

On substituting the values given in the problem statement, we get;

For red light, θr = arcsin(sin 33.0°/1.71)

θr = 19.9°

For blue light,θb = arcsin(sin 33.0°/1.8)

θb = 19.1°

Therefore, the angular spread is;

Δθ = θb - θrΔθ = 19.1° - 19.9°Δθ = -0.8°

Thus, the angular spread between the red and blue light after entering the glass is -0.8°.

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Here is a graph of my dog walking in my yard. a. What is the dog's displacement after 5 s ? b. What is the dog's distance travelled after 5 s ? c. At what position (if any) is the dog stopped? d. What is the dog's velocity at t=4 s ?

Answers

a. The dog's displacement after 5 seconds is equal to the change in position. To determine this, we must determine the distance between the final position and the initial position.

The dog's initial position was zero, and its final position was 1 meter west (negative direction), so the displacement is equal to 1 meter in the negative direction.

Displacement = final position - initial position = -1 m - 0 m = -1 m.

b.

The distance traveled is the total distance covered by the dog. We must determine the sum of the magnitudes of each vector quantity in this case. The displacement from the previous part was equal to 1 m, but we must now account for the distance that the dog covered in the positive direction (east) before moving back west. 2 m + 1 m = 3 m total distance covered. The dog's distance traveled after 5 seconds is equal to 3 meters.

c. The dog is motionless when its position remains constant. The dog is stationary between 2 and 3 seconds because the graph is flat. The dog is not in any position when it is stopped.

d.

Velocity is defined as the rate at which the position changes over time. If the position increases over time, the velocity is positive, whereas if the position decreases over time, the velocity is negative.

When the position remains constant, the velocity is zero. The graph is flat between 2 and 3 seconds, so the velocity is zero. When the dog is at a position of 1 meter west of the origin at 5 seconds, the dog's velocity is calculated as follows:

Velocity = displacement/time = (-1 m - 0 m) / (5 s - 0 s) = -1/5 m/s.

The dog's velocity at t = 4 s is -1/5 m/s.

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(a) Given a 36,0 V battery and 18.0 D and 92.0 resistors, find the current (in A) and power (in W) for each when connected in series. 19.00 P18.00 = A 192,00 P92.00 = W (b) Repeat when the resistances are in parallel 19.00 = P18.0 n = w TA 192.00 - P2.00 = w

Answers

(a) To find the current (in A) and power (in W) when connected in series,

we use the formula:

V = IRV = 36.0V

Resistor 1: R1 = 18.0Ω

Resistor 2: R2 = 92.0Ω

Equivalent resistance: RT = R1 + R2

= 18.0Ω + 92.0Ω

= 110.0ΩI

= V/R = 36.0V/110.0Ω

          = 0.327 A19.00 P18.00 = A - The current is 0.327 A, which is the same through both resistors.

P = VI = (0.327 A)(36.0 V)

           = 11.772 W - The power is 11.772 W for both resistors.

(b) When the resistances are in parallel, we use the formula:

1/RT = 1/R1 + 1/R21/RT

= 1/18.0Ω + 1/92.0Ω1/RT

= 0.062 + 0.011RC

= (1/0.062 + 0.011)-1

= 15.3ΩI1

= V/R1

= 36.0 V/18.0 Ω

= 2.0 AI2

= V/R2

= 36.0 V/92.0 Ω

= 0.391 A19.00 = P18.0

n = w - The current through the 18.0 Ω resistor is 2.0 A, and the current through the 92.0 Ω resistor is 0.391

A.T = P1 + P2 = V(I1 + I2) = (36.0 V)(2.0 A + 0.391 A) = 76.08 W - The total power is 76.08 W.

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A ball is thrown at an unknown angle. However a speed gon was able to deleet the ball's speed to be 30.0 m/s at the moment the ball was released from the persons hand. The release point is 1.89 m above the ground. If the ball lands a horizontal distance of 70 m away, what is the a) launch angle b) maximum height C) final velocity

Answers

Given information:Speed of the ball, v₀ = 30.0 m/sThe release point is 1.89 m above the ground.Horizontal distance, R = 70 m 

a) Launch angleThe equation of motion of the ball can be represented as, R = v₀²sin2θ/g where g is the acceleration due to gravityR = 70 m, v₀ = 30 m/s, and g = 9.8 m/s²By substituting the given values, we get,70 = 30² sin2θ/9.8sin2θ = (70*9.8)/(30²)sin2θ = 0.4111θ = 0.4111/2 = 0.2057 radianUsing the radian to degree conversion formula,θ = 0.2057 * 180/π ≈ 11.8°Therefore, the launch angle is 11.8°.

b) Maximum heightThe maximum height attained by the ball can be calculated using the equation, h = v₀²sin²θ/2gBy substituting the given values, we get,h = 30²sin²(0.2057)/(2*9.8)h ≈ 9.08 mTherefore, the maximum height is 9.08 m.

c) Final velocityThe final velocity of the ball can be calculated using the formula, v = √(v₀² - 2gh)By substituting the given values, we get,v = √(30² - 2*9.8*1.89)v ≈ 26.5 m/sTherefore, the final velocity is 26.5 m/s. 

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A 4.00 kg particle is under the influence of a force F = 2y + x², where F is in Newtons and x and y are in meters. The particle travels from the origin to the coordinates (5,5) by traveling along three different paths. Calculate the work done on the particle by the force along the following paths. Remember that coordinates are in the form (x,y). a) In a straight line from the origin to (5,0), then, in a straight line from (5,0) to (5,5) b) In a straight line from the origin to (0,5), then, in a straight line from (0,5) to (5,5) c) In a straight line directly from the origin to (5,5) d) Is this a conservative force? Explain why it is or is not.

Answers

a) In a straight line from the origin to (5,0), then, in a straight line from (5,0) to (5,5)

The net work done by a force is given by:

Wnet = W1 + W2

Thus,W1 = ∫F . ds = ∫F (x)dx + ∫F (y)dy

Where,F (x) = 0F (y) = 2y + x²

∴ W1 = ∫(2y + x²) dy

= [y² + x²y]0 to 5

= (5² + 5²/2) − 0

= 25 + 12.5

= 37.5 J

Similarly,

W2 = ∫F (y)dy

= ∫(2y + x²)dy

= [y² + x²y]0 to 5

= (5² + 5²/2) − 0

= 25 + 12.5

= 37.5 J

Therefore, Wnet = 37.5 + 37.5 = 75 J

b) In a straight line from the origin to (0,5), then, in a straight line from (0,5) to (5,5)

W1 = ∫F (x)dx

= ∫(2y + x²) dx

= [2xy + x³/3]0 to 5

= (50 + 125/3) − 0

= 175/3 J

Similarly,

W2 = ∫F (y)dy = ∫(2y + x²)dy

= [y² + x²y]5 to 0

= (0 + 125/3) − 0

= 125/3 J

Therefore, Wnet = (175/3) + (125/3) = 100/3 J

c) In a straight line directly from the origin to (5,5)

W1 = ∫F . ds

= ∫F ds = ∫F dx + ∫F dy

F (x) = 2y + x²F (y) = 2y + x²

∴ W1 = ∫F (x) dx + ∫F (y) dy

= ∫(2y + x²) dx + ∫(2y + x²) dy

= [y² + x²y]0 to 5 + [y² + x²y]0 to 5

=37.5 J + 37.5 J= 75 J

D) Is this a conservative force? Explain why it is or is not.

The force is not conservative because the work done is different for the three different paths from the origin to (5, 5). In addition, the integral of the curl of the force is not equal to zero.

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Consider a negatively charged particle which moves in an area of space where an electric field exists. No other forces act on the particle. Which of the following is a correct statement (can be more than one if applicable)? Explain your reasoning.
(a) Gains potential energy and kinetic energy when it moves in the direction of the electric field
(b) Loses electric potential energy when the particle moves in the direction of the electric field
(c) Gains kinetic energy when it moves in the direction of the field
(d) Gains electric potential energy when it moves in the direction of the field
(e) Gains potential difference and electric potential energy when it moves in the direction of the field.

Answers

The correct statements are (b) Loses electric potential energy when the particle moves in the direction of the electric field and (c) Gains kinetic energy when it moves in the direction of the field.

(b) When a negatively charged particle moves in the direction of an electric field, it experiences a force in the opposite direction of the field. Since the force and displacement are in opposite directions, the work done by the electric field on the particle is negative.

According to the work-energy theorem, the work done on an object is equal to the change in its potential energy. Therefore, as the particle moves in the direction of the electric field, it loses electric potential energy.

(c) The electric field exerts a force on the negatively charged particle, causing it to accelerate in the direction of the field. As the particle gains speed, its kinetic energy increases.

Kinetic energy is associated with the motion of an object and is given by the equation KE = 1/2 [tex]mv^2[/tex], where m is the mass of the particle and v is its velocity. Since the particle is gaining velocity in the direction of the electric field, it is also gaining kinetic energy.

The other statements, (a), (d), and (e), are incorrect. The particle does not gain potential energy when it moves in the direction of the electric field (statement a), nor does it gain electric potential energy (statement d).

Additionally, the statement (e) is incorrect because the potential difference is a measure of the change in electric potential energy per unit charge, and it is not gained by the particle as it moves in the direction of the field.

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Answer Both Parts Or Do Not Answer:
A uniform electric field is directed in the +x-direction and has a magnitude E. A mass 0.072 kg and charge +2.90 mC is suspended by a thread between the plates. The tension in the thread is 0.84 N.
What angle does the thread make with the vertical axis? Please give answer in degrees.
Find the magnitude of the electric force. Give answers in N to three significant figures.

Answers

The angle between the thread and the vertical axis is approximately 41.7 degrees. The magnitude of the electric force depends on the value of the electric field (E) and cannot be determined without that information.

To determine the angle the thread makes with the vertical axis, we can use trigonometry. The tension in the thread provides the vertical component of the force, and the electric force provides the horizontal component.

Given:

Mass (m) = 0.072 kg

Charge (q) = 2.90 mC = 2.90 × 10^(-3) C

Tension in the thread (T) = 0.84 N

The vertical component of the force is equal to the tension in the thread, so we have:

Tension (T) = mg

Solving for g, the acceleration due to gravity:

g = T / m

Substituting the values:

g = 0.84 N / 0.072 kg = 11.67 N/Kg

Next, we can find the magnitude of the electric force (F_e) using the formula:

F_e = qE

Given that the electric field magnitude (E) is directed in the +x-direction and has a value E, we can substitute the values:

F_e = (2.90 × 10^(-3) C) × E

The angle between the tension and the vertical axis can be found using the tangent function:

tan(theta) = Tension_y / Tension_x

tan(theta) = Weight / Tension

tan(theta) = 0.7056 N / 0.84 N

theta ≈ 41.7 degrees

Now, we can solve for θ by taking the inverse tangent (arctan) of both sides.

The magnitude of the electric force is given by F_e = (2.90 × 10^(-3) C) × E, where E is the electric field magnitude.

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For f = (2y-z)³ i + x² j - (3x²+1)k, is f conservative
at point (1,4,6)?
is there a curl?
is there a divergence?

Answers

For f = (2y-z)³ i + x² j - (3x²+1)k, is f conservative

at point (1,4,6)?

Curl (or rotation) is the curl of a vector field, which describes the magnitude and direction of the rotation of a particle at a point. To find whether f is conservative, we must find the curl of f and check whether it is zero or not.

The curl of the given function is: curl(f) = (∂Q/∂y - ∂P/∂z) i + (∂R/∂z - ∂P/∂x) j + (∂P/∂y - ∂Q/∂x) k

Where, P = (2y - z)³Q = x²R = -(3x² + 1)∂P/∂x = 0∂P/∂y = 6(2y - z)²∂P/∂z = -3(2y - z)²∂Q/∂x = 2x∂Q/∂y = 0∂Q/∂z = 0∂R/∂x = -6x∂R/∂y = 0∂R/∂z = 0

Therefore, curl(f) = (12z - 24y) i + 0 j + 6x k

At point (1, 4, 6),curl(f) = (12(6) - 24(4)) i + 0 j + 6(1) k= -72 i + 6 k

Therefore, the curl of f at point (1, 4, 6) is not zero. Therefore, f is not conservative at point (1, 4, 6).

Divergence is the measure of the magnitude of a vector field's source or sink at a given point in the field. To determine if there is a divergence, we must take the divergence of the function.

The divergence of the given function is:div(f) = ∂P/∂x + ∂Q/∂y + ∂R/∂z= 0 + 0 - 6

Therefore, the divergence of f is -6.

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Index of refraction Light having a frequency in vacuum of 5.4×10 14
Hz enters a liquid of refractive index 2.0. In this liquid, its frequency will be:

Answers

When light with a frequency of 5.4×10^14 Hz enters a liquid with a refractive index of 2.0, its frequency will remain the same.

The frequency of light refers to the number of complete oscillations or cycles it undergoes per unit of time. The index of refraction, denoted by "n," is a property of a medium that describes how light propagates through it.

It is defined as the ratio of the speed of light in a vacuum to the speed of light in the medium. In this case, the light enters a liquid with a refractive index of 2.0.

When light passes from one medium to another, its speed and wavelength change, while the frequency remains constant. The frequency of light is determined by the source and remains constant regardless of the medium it traverses.

Therefore, the frequency of light with a value of 5.4×10^14 Hz will remain the same when it enters the liquid with a refractive index of 2.0.In summary, the frequency of light with a vacuum frequency of 5.4×10^14 Hz will not change when it enters a liquid with a refractive index of 2.0.

The index of refraction only affects the speed and wavelength of light, while the frequency remains constant throughout different media.

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What is the magnification for a simple magnifier of focal length 5 cm, assuming the user has a normal near point of 25 cm ? 5 25 12.5 125

Answers

the magnification for a simple magnifier of focal length 5 cm, assuming the user has a normal near point of 25 cm is 6.Please note that the answer is 75 words.

The magnification for a simple magnifier of focal length 5 cm, assuming the user has a normal near point of 25 cm is 5. This can be computed using the formula:

Magnification of simple microscope = (D/f) + 1, where D is the least distance of clear vision or near point, and f is the focal length of the lens or magnifying glass.

Given that focal length of simple magnifier, f = 5 cmLeast distance of clear vision, D = 25 cmMagnification = (25/5) + 1= 5 + 1= 6

Therefore, the magnification for a simple magnifier of focal length 5 cm, assuming the user has a normal near point of 25 cm is 6.Please note that the answer is 75 words.

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A swimmer is swimming at 1 knot (nautical miles per hour) on a heading of N30⁰W. The current is
flowing at 2 knots towards a bearing of N10⁰E. Find the velocity of the swimmer, relative to the shore.

Answers

The magnitude of the swimmer's velocity relative to the shore is approximately 1.199 knots, and the direction is approximately N86.18⁰W. To find the velocity of the swimmer relative to the shore, we can break down the velocities into their components and then add them up.

Swimmer's velocity: 1 knot on a heading of N30⁰W

Current's velocity: 2 knots towards a bearing of N10⁰E

First, let's convert the velocities from knots to a common unit, such as miles per hour (mph). 1 knot is approximately equal to 1.15078 mph.

Swimmer's velocity:

1 knot = 1.15078 mph

Current's velocity:

2 knots = 2.30156 mph

Swimmer's velocity:

[tex]Velocity_N[/tex] = 1 knot * cos(30⁰) = 1 knot * √(3)/2 ≈ 0.866 knots

[tex]Velocity_W[/tex] = 1 knot * sin(30⁰) = 1 knot * 1/2 ≈ 0.5 knots

Current's velocity:

[tex]Velocity_N[/tex] = 2 knots * sin(10⁰) = 2 knots * 1/6 ≈ 0.333 knots

[tex]Velocity_E[/tex] = 2 knots * cos(10⁰) = 2 knots * √(3)/6 ≈ 0.577 knots

Now, we can add up the north-south and east-west components separately to find the resultant velocity relative to the shore.

Resultant [tex]velocity_N[/tex] = [tex]velocity_N[/tex] (swimmer) + [tex]velocity_N[/tex] (current) ≈ 0.866 knots + 0.333 knots ≈ 1.199 knots

Resultant [tex]velocity_W[/tex] = [tex]velocity_W[/tex] (swimmer) - [tex]Velocity_E[/tex] (current) ≈ 0.5 knots - 0.577 knots ≈ -0.077 knots

Note that the negative value indicates that the resultant velocity is in the opposite direction of the west.

Finally, we can calculate the magnitude and direction of the resultant velocity using the Pythagorean theorem and trigonometry.

Resultant velocity = √(Resultant [tex]velocity_N^2[/tex]+ Resultant [tex]velocity_W^2[/tex])

≈ √((1.199 [tex]knots)^2[/tex]+ (-0.077 [tex]knots)^2[/tex]) ≈ √(1.437601 [tex]knots)^2[/tex] ≈ 1.199 knots

The direction of the resultant velocity relative to the shore can be determined using the arctan function:

Resultant direction = arctan(Resultant [tex]velocity_N[/tex]/ Resultant [tex]velocity_W[/tex])

≈ arctan(1.199 knots / -0.077 knots) ≈ -86.18⁰

Therefore, the magnitude of the swimmer's velocity relative to the shore is approximately 1.199 knots, and the direction is approximately N86.18⁰W.

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Sue is on planet X which is a distance 6.6x109 km from a certain star which has a radius 7000 km. Sue measures the maximum intensity of light on the surface of the planet to be 9000 W m2. Planet X has no atmosphere and so there is no absorption of light between the star and the surface of the planet. Calculate the temperature of the star, which can be assumed to be a black body. a. 6.1e5K O b. 5.78 K O c. 2.0e5K O d. 6.0e6 K e. 6.0e8 K

Answers

Sue is on planet X which is a distance 6.6x109 km from a certain star which has a radius 7000 km. the correct option is (a) [tex]6.1 * 10^5 K.[/tex]

To calculate the temperature of the star, we can use the Stefan-Boltzmann Law, which states that the power radiated by a black body is proportional to the fourth power of its temperature (T):

Power = σ * A * T^4

Where:

Power is the total power radiated by the star

σ is the Stefan-Boltzmann constant (approximately 5.67 × 10^-8 W/(m^2·K^4))

A is the surface area of the star

First, we need to calculate the surface area of the star. Since it is a sphere, the surface area (A) is given by:

A = 4πr^2

Where r is the radius of the star (7000 km = 7 × 10^6 m).

A = 4π * (7 × 10^6)^2

A = 4π * 4.9 × 10^13

A ≈ 2.46 × 10^14 m^2

Now, we can rearrange the Stefan-Boltzmann Law to solve for T:

T^4 = Power / (σ * A)

Substituting the known values, including the power intensity (9000 W/m^2) measured by Sue on the planet's surface, we have:

T^4 = [tex]9000 W/m^2 / (5.67 * 10^{-8} W/(m^2.K^4) * 2.46 * 10^{14} m^2)[/tex]

T^4 ≈ [tex]6.48 * 10^{11} K^4[/tex]

Taking the fourth root of both sides:

T ≈ (6.48 × 10^11)^(1/4)

T ≈ 611,626 K

Rounding to the nearest hundredth, the temperature of the star is approximately [tex]6.1 * 10^5 K.[/tex]

Therefore, the correct option is (a)[tex]6.1 * 10^5 K.[/tex]

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At dawn, with the Sun just rising in the east, you face the Sun and bend your head back to look straight up, and you examine the blue sky light with a Polaroid filter. (a) [2 points] Why is the light polarized? (b) (2 points) What is the direction of the electric field, east-west or north-south? Explain briefly why

Answers

a. Polarization is caused by the scattering of sunlight off air molecules in the Earth's atmosphere.

b. when you examine the blue sky light with a Polaroid filter, the direction of the electric field is North-South.

a. The electric fields of electromagnetic waves are caused by the vibration of charged particles. A polarized filter is able to block one direction of polarization while allowing the other direction to pass through. This happens because a polarizing filter is made up of a long chain of molecules oriented in one direction, which blocks light waves with electric fields oriented in a perpendicular direction.

The polarization of sunlight is due to the scattering of light off air molecules. This scattering causes light waves with electric fields oriented in a perpendicular direction to the Sun to be polarized. The electric fields of light waves in the blue part of the spectrum are oriented in a north-south direction, while the electric fields of light waves in the red part of the spectrum are oriented in an east-west direction.

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Give your answers in SI units and to three significant figures. Question 1 3 pts Newer automobiles have filters that remove fine particles from exhaust gases. This is done by charging the particles and separating them with a strong electric field. Consider a positively charged particle +8μC that enters an electric field with strength 6×10 6
N/C. The particle is traveling at 77 m/s and has a mass of 1 g. If the horizontal width of the filter is 20 cm, determine the vertical distance that the particle will be deflected as it passes through the filter. Express your answer in meters.

Answers

The vertical distance that the particle will be deflected as it passes through the filter is 7.09 x 10^-6 m.

Explanation:Given,Charge of the particle, q = +8μC = +8 × 10^-6 CStrength of electric field, E = 6 × 10^6 N/CVelocity of the particle, v = 77 m/sMass of the particle, m = 1 g = 10^-3 kgWidth of the filter, d = 20 cm = 0.2 mThe electric force acting on a charged particle in an electric field is given byF = qE ……… (1)The particle will experience force in the horizontal direction, F = qE ……… (2)It will move with constant velocity in the vertical direction and experiences force of gravity in the vertical direction, F = mg ……… (3)Let ‘y’ be the vertical deflection. Net force experienced by the particle along the y-axis is given asFy = mg ……… (4)By Newton’s second law, F = ma ……… (5)Net force experienced by the particle along the x-axis is given asFx = qE ……… (6)Net force acting on the particle is given asFnet = √(Fx^2 + Fy^2) ……… (7)The net force acting on the particle is given asqE = ma ……… (8).

As the particle is moving with constant velocity along the y-axis, its acceleration along the y-axis is zero.Therefore, Fy = 0mg = 0y = 0Also, the net force acting on the particle is given by, Fnet = qE ……… (9)Fnet = qE = +8 × 10^-6 × 6 × 10^6 = 48 × 10^-6 NNet force acting on the particle along the x-axis is given as,Fx = Fnet sin θ ……… (10)θ = tan^-1 (y/d)Fx = ma = Fnet cos θ ……… (11)θ = tan^-1 (y/d)a = Fnet/m = (qE)/mcos θsin θ = y/dcos θ = √(1 – sin^2 θ)cos θ = √(1 – (y/d)^2)Fx = ma = Fnet cos θ(8 × 10^-6) × 6 × 10^6 √(1 – (y/0.2)^2) = (10^-3) × ay/0.2 = (48 × 10^-6)/[(10^-3) × 6 × 10^6 √(1 – (y/0.2)^2)]y = 7.09 x 10^-6 m.

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A vibrating tuning fork of frequency 730 Hz is held above a tube filled with water. Assume that the speed of sound is 340 m/s. As the water level is lowered, consecutive maxima in intensity are observed at intervals of about A) 107.4 cm B) 46.6 cm C) 11.6 cm D214.7 cm EU 23.3 cm

Answers

The interval between consecutive maxima in intensity is approximately 46.58 cm i.e., the correct answer is B) 46.6 cm.

To determine the interval between consecutive maxima in intensity, we can use the formula:

λ = v/f

where λ is the wavelength, v is the speed of sound, and f is the frequency.

Given that the frequency of the tuning fork is 730 Hz and the speed of sound is 340 m/s, we can calculate the wavelength:

λ = 340 m/s / 730 Hz ≈ 0.4658 m

Now, we need to convert the wavelength to centimeters to match the options provided.

There are 100 centimeters in a meter, so:

0.4658 m × 100 cm/m ≈ 46.58 cm

Therefore, the interval between consecutive maxima in intensity is approximately 46.58 cm.

Among the options provided, the closest one to 46.58 cm is option B) 46.6 cm.

So, the correct answer is B) 46.6 cm.

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A 12.0 kg ladder leans against a frictionless wall. The ladder is 8.00 m long; it makes an angle of 52.0° with the floor. The coefficient of static friction between the floor and the ladder is 0.45. A 65.0 kg person is climbing the ladder. How far along the ladder can the person can climb before the ladder begins to slip? (a) Draw a diagram of the ladder depicting the forces acting on it. Clearly label each force. {Hint use descriptors such as mg, 0, etc.. not numerals} (b) Find how far along the ladder the person can climb before the ladder begins to slip.

Answers

(a) The free-body diagram of the ladder is shown below:1. Force of gravity on ladder = -mg (acts through the center of mass)2. Normal force from the floor on ladder = 0 (acts perpendicular to the floor and upward)3. Force of friction on ladder = -f_s (acts in a direction opposing motion)4. Force exerted by the person = P (acts parallel to the ladder and upward)5. Force of gravity on the person = -Mg (acts through the center of mass of the person)Free body diagram for ladder with forces acting on it.  

(b) Calculate the maximum force of friction between the floor and ladder using the coefficient of static friction, 0.45, which is given by:f_s = μ_sN, where N is the normal force on the ladder from the floor. Since the ladder is not moving, the force of friction must be equal and opposite to the force exerted by the person on the ladder in order to maintain equilibrium:P = f_s = μ_sN, where N is the normal force on the ladder from the floor.

Therefore, the normal force is given by:N = Mg + m(gsinθ - μ_s cosθ), where θ is the angle the ladder makes with the floor. Substituting the given values, we get:N = (65.0 kg)(9.81 m/s^2) + (12.0 kg)(9.81 m/s^2)(sin 52.0° - 0.45 cos 52.0°)N = 772.2 NThe person can climb the ladder until the force exerted by the person on the ladder is equal to the maximum force of friction between the floor and ladder, which is:f_s = μ_sN = 0.45(772.2 N) = 347.5 NThe force exerted by the person is given by:P = Mg + mgsinθ = (65.0 kg)(9.81 m/s^2) + (12.0 kg)(9.81 m/s^2)(sin 52.0°)P = 784.4 N.

Therefore, the maximum distance along the ladder that the person can climb before the ladder begins to slip is given by:d = P/f_s = 784.4 N/347.5 N = 2.26 m (to three significant figures).Answer: (a) The free-body diagram of the ladder is shown above. (b) The maximum distance along the ladder that the person can climb before the ladder begins to slip is given by d = P/f_s = 2.26 m.

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A proton is about 2000 times more massive than an electron. Is it possible for an electron to have the same de Broglie wavelength as a proton? If so, under what circumstances will this occur? If not, why not? (conceptual

Answers

The de Broglie wavelength of a particle is given by the equation:

λ = h / p, where λ is the de Broglie wavelength, h is the Planck constant, and p is the momentum of the particle.

The momentum of a particle is given by:

p = mv

where m is the mass of the particle and v is its velocity.

Since the mass of a proton is about 2000 times greater than the mass of an electron, the velocity of the proton would need to be 2000 times smaller than the velocity of the electron in order for them to have the same momentum.

However, the velocity of an electron in an atom is primarily determined by its energy levels and the electrostatic forces within the atom. The velocity of a proton, on the other hand, would be influenced by different factors in a different context.

Therefore, under normal circumstances, it is not possible for an electron and a proton to have the same de Broglie wavelength because their masses and velocities are determined by different physical processes.

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Design FM transmitter block diagram for human voice signal with
available bandwidth of 10kHz
Also justify each block of your choice.

Answers

Design FM transmitter block diagram for human voice signal with

available bandwidth of 10kHz

The following are the justification for each block in block diagram of an FM transmitter for a human voice signal with an available bandwidth of 10 kHz:

Microphone: A microphone is a transducer that converts sound waves into electrical signals. As a result, the microphone should be of excellent quality, and the voice signal must be filtered and amplified to produce the necessary level of voltage.

Audio Amplifier: The audio signal that comes from the microphone has a very low level of voltage, therefore it must be amplified to increase the voltage to a level that is required for the modulator. As a result, the audio amplifier block must be included in the FM transmitter circuit.

RF Oscillator: The RF oscillator is the most important component of the FM transmitter. It produces a stable carrier signal that is modulated with the audio signal. A crystal-controlled oscillator is required for frequency stability.

Frequency multiplier: It is a multiplier circuit that increases the frequency of the carrier signal, which is necessary to get the desired output frequency. A frequency multiplier block must be included to achieve the desired output frequency.

Frequency Modulator: It is a circuit that modulates the audio signal onto the carrier signal. The frequency deviation is proportional to the amplitude of the audio signal. As a result, the frequency modulator block must be included in the FM transmitter circuit.

Power Amplifier: The power amplifier block is used to increase the power of the modulated signal to the level needed for transmission. As a result, it must be included in the FM transmitter circuit.

Antenna: It is the final stage of the FM transmitter. The modulated signal is transmitted by the antenna. Therefore, an antenna block is necessary to radiate the signal to the desired location.

This is the FM transmitter block diagram for a human voice signal with an available bandwidth of 10 kHz.

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Other Questions
Question One a) What are the basic data required for hydrological studies? b) Sketch a hydrologic cycle and indicate in the sketch the major components of the hydrologic cycle c) Describe briefly three engineering examples where the application of hydrology is important. d) What are the functions of hydrology in water resources development? HELP PLS: NEED ANSWER ASAPPPPPPPPPPPP A beverage manufacturer has recently commissioned a 500 m aerated tank to biologically treat 4x105 L/d of wastewater prior to discharge. The tank is a single-pass configuration not catering for recycle. Regulations are particularly stringent requiring that the discharged waste does not exceed 10 mg BOD/L owing to the sensitive receiving environment. You have been specifically asked to determine whether the current tank volume is adequate. If not, determine the maximum flow that can be treated while still meeting the BOD discharge requirement with the existing tank. If the mixed liquor suspended solids concentration in the tank is to be set at 1500 mg /L, determine the maximum concentration of BOD in the influent that may be adequately treated. Quantify how much solid material will be discharged per day. [data: Umax = 3 mg VSS/mg VSS.d; Ks = 30 mg/L as BOD; Y = 0.6 mg VSS/mg BOD] = On January 1. 2020. Fisher Corporation purchased 40 percent ( 86.000 shares) of the common stock of Bowden, Inc., for $980,000 in cash and began to use the equity method for the investment. The price paid represented a $60.000 payment in excess of the book value of Fisher's share of Bowden's underlying net assets. Fisher was willing to make this extra payment because of a recently developed patent held by Bowden with a 15-year remaining life. All other assets were considered appropriately valued on Bowden's books. Bowden declares and pays a $100,000 cash dividend to its stockholders each year on September 15 . Bowden reported net income of $382,000 in 2020 and $358,000 in 2021 . Each income figure was earned evenly throughout its respective years. On July 1, 2021. Fisher sold 10 percent ( 21,500 shares) of Bowden's outstanding shares for $322,000 in cash. Although it sold this interest, Fisher maintained the ability to significantly influence Bowden's decision-making process. Prepare the journal entries for Fisher for the years of 2020 and 2021. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field. Do not round intermediate calculations. Round your final answers to the nearest whole dollar.) Journal entrv worksheet By mathematical induction, prove that the product of four consecutive integers is divisible by 24 2. Let a, b and c be integers. Show that if a/2b-3c and a/4b-5c, then alc. 3. TRUE OR FALSE: Let d, e and f be integers. If elf and dlf, then dle. Support your answer. 4. Find the greatest common divisor d of the numbers 6, 10 & 15 and then find integers x, y and z to satisfy 6x +10y + 15z =d. Frannie is a farmer who raises corn as his main cash crop. Recently, domestic corn sales in the United States have hit an all-time low, and Frannies business is really struggling. Most corn is being imported from Mexico, and local farmers like Frannie cannot compete with the low prices. Frannie and other farmers ask for governmental help with this problem. One way that the government can address the problem and help American farmers is to:prohibit all trade with Mexico.nothing; the government cannot interfere with free trade.impose a tariff on the sale of corn from Mexico.prohibit all corn sales from Mexico. When reading information on the internet, all of the following are signals that what you are reading is of higher quality, empirical, or academic EXCEPT? the author states they have a Ph.D many in-text citations and references abstract, intro, methods, and findings sections O the article has the authors, year, and journal title Question 19 1 pts The brain's lifelong ability to reorganize and change its neural structure and pathways with increased effort is known as: neuroscience neurotransmitters mirror neurons neuroplasticity Compare and contrast diffusion and convection and the impact on dispersal of air pollution. An inverter has propagation delay high to low of 3 ps and propagation C02, BL3 delay low to high of 7 ps. The inverter is employed to design a ring oscillator that generates the frequency of 10 GHz. Who many such inverters will be required for the design. If three stages of such inverter are given in an oscillator then what will be the frequency of oscillation? Section A Please answer one of the following three questions. Question 1 answer parts (a) and (b) (a) A storage heater contains 1 m of water at 70 C. Given that it delivers heat to a room maintained at 20 C, what is its heat storage. capacity in kWh m? Assume: density of water in the relevant temperature range is 1000 kg m-, and the heat capacity of water in the relevant temperature range is 4.2 J K g. (b) A heat storage system developed on part of the lime cycle, based on the exothermic reaction of lime (CaO) with water to produce slaked lime (Ca(OH)2), and the corresponding endothermic dissociation of slaked lime to re-form lime is developed. In this system, the volatile product is steam, which is condensed and stored. Assuming that the slaked lime powder is 40% of its bulk density, and that the heat evolved by condensing steam is wasted, calculate the heat storage capacity in kW h per cubic metre of Ca(OH)2. DATA: Ca(OH)2(s) CaO(s) + HO(g) AH, = 109 kJ/mol HO(g) AH, 44 kJ/mol HO(1) Bulk density of Ca(OH)2 = 2240 kg/m Question 2 answer parts (a) and (b) (a) A storage heater contains 1 m of water at 70 C. Given that it delivers heat to a room maintained at 20 C, what is its heat storage capacity in kWh m? Assume: density of water in the relevant temperature range is 1000 kg m, and the heat capacity of water in the relevant temperature range is 4.2 J K g. (b) A heat storage system developed on part of the lime cycle, based on the exothermic reaction of lime (CaO) with carbon dioxide to produce calcite (CaCO3), and the corresponding endothermic dissociation of calcite to re-form lime is developed. In this system, the volatile product is carbon dioxide, which is mechanically compressed and stored as CO2(1). Assuming that the calcite powder is 40% of its bulk density, and that the enthalpy change for the conversion of pressurised CO2(1) to CO(g) is zero at 1 atm, calculate the heat storage capacity in kWh per cubic metre of CaCO3. DATA: CaCO3(s) CaO(s) + CO(g) AH,= 178 kJ/mol Bulk density of CaCO3 = 2700 kg/m a. What type of agreement (lump-sum, unit-price, or cost plus-fee) is used for the project? If it is a cost- plus-fee agreement, how is the fee determined, and is there a guaranteed maximum price? The CSS _____ technique lets you create a single image that contains different image states. This is useful for buttons, menus, or interface controls. a.drop-down menu b.float c.sprite d.multicolumn layout There are several psychological theories discussed in our textbook that explain why prejudice exists. Describe one psychological theory related to how prejudiced attitudes could be formed. Explain the theory with examples. 1. Smart technologies may cause consumers to forfeit their privacy rights in legal proceedings. True False2. As we incorporate more and more technology into myriad aspects of daily life , so too are we presented with a whole new set of legal questions that must be answered. True False programming Write a function void reverse(int a[ ], int size) to reverse the elements in array a, the second parameter size is the number of elements in array a. For example, if the initial values in invocation of function reverse(), the final array values should be {0, 2, 3, 5) In main() function, declares and initializes an array a is {5, 3, 2, 0). After the integer array a with{5, 3, 2, 0), call reverse() function, display all elements in final array a. Write the program on paper, take a picture, and upload it as an attachment Or just type in the program in the answer area Satellite A of mass 48.6 kg is orbiting some planet at distance 1.9 radius of planet from the surface. Satellite B of mass242.9 kg is orbiting the same planet at distance 3.4 radius of planet from the surface. What is the ratio of linear velocities of these satellites v_a/v_b? The solitary sea anemone (Anthopleura sola), has stinging cells on tentacles that line its mouth, a polyp with a flower-like appearance, and lives in rocky areas of the sea floor. It belongs to what class?GastropodaPolyplacophoraAsteroideaAnthozoaEchinoidea What is a free helper function for a class Foo? Choose the answer that de- scribes it best A. It's a member function that doesn't have access to private data of the class. 4 B. It's a member function that doesn't have an accessibility label.C. It's a global function that can access private functions of Foo but not private data. D. It's a global function that receives an instance of type Foo as parameter Consider the following collection of news headlines, where the document class is in bold. Each headline (e.g., "Covid Vaccination") is treated as a document.[World News] : "Covid Vaccination", "Corona Virus", "Travel Restrictions"[Health] : "Covid Vaccination", "International Travel"Estimate the parameters of Nave Bayes Classifier Multinomial event model using the method of maximum likelihood estimation. (Estimate for all the terms in the collection; Show the computations clearly). A group of students carry out an experiment to find the concentration of chlorine, Cl(aq), in a solution. Excess potassium iodide solution is added to a 10.0 cm sample of the chlorine solution. Cl(aq) + 21 (aq) 2Cl(aq) + 1(aq) The iodine produced is titrated with a solution of thiosulfate ions of known concentration, using starch indicator. 25,0 (aq) + 1(aq) SO (aq) + 21 (aq) The concentration of the Cl(aq) is between 0.038 and 0.042 mol dm. (a) What concentration of thiosulfate ions, in moldm, is required to give a titre of approximately 20 cm? A 0.010 B 0.020 0.040 D 0.080 (b) What is the most suitable volume of 0.1 mol dm potassium iodide solution, in cm, to add to the 10.0 cm of chlorine solution? A 7.6 B 8.0 C 8.4 D 10.0 (c) What is the colour change at the end-point of the titration? A colourless to pale yellow B pale yellow to colourless C colourless to blue-black D blue-black to colourless