what is the kinetic energy of a ball with a mass of 7 kg rolling at 10m/s

Answer:

333N

Explanation:

=>First you have to find the mass of the asteroid.

so 882N÷9.8m/s²=90Kg

then,multiply it by Mars's gravity

=>90Kg*3.7m/s²=333N

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, The Resistance is given as 20 Ohm's . Current is given as 1.5 Amperes . And, we have been asked to calculate the Voltage .

For calculating the Voltage , we will use the Formula :-

[tex] \bigstar \: \: \: \boxed {\sf { \: Voltage \: = \: Current \: \times \: Resistance \: }} [/tex]

Therefore , by Substituting the given values in the above Formula :-

[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: Current \: \times \: Resistance } [/tex]

[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: 1.5 \: \times \: 20 } [/tex]

[tex] \Longrightarrow \: \: \: \bf { Voltage \: = \: 30 } [/tex]

Hence :-

[tex] \underline {\rule {180pt}{4pt}} [/tex]

Additional Information :-

[tex]\Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} [/tex]

[tex] \Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance}} [/tex]

[tex] \Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } [/tex]

Answer:

Explanation:

Given:

To Find:

Solution:

Using formula:

By Substituting the required values,

⇢ Voltage = 1.5 × 20

⇢ Voltage = 30 Volts.

Hence,

Answer:

i will say that the endoplasmic reticulum is a complex organelle that plays a pivotal role in protein and lipid synthesis, calcium storage and stress response

Answer:

The particles of both states are free flowing and they fill the container that they are in.

Explanation:

Liquids and gases do not have a set formation like a solid does. Liquids have more range of motion and will fill a container (such as how water will fill a glass). Gas has an even wider range of motion and move around very quickly.

The distance the  100kg man must climb to burn off 500 kilocalories by running up an elliptical path is 2,136.1 m.

The potential energy of the man from a known height can be used to deternine the distance the man would have to climb.

P.E = mgh

Where;

P.E is potential energy, given as  500 kilocalories,

1 kcal = 4186.8 joules

500 kcal = 2,093,400 J

h = P.E/mg

h = (2,093,400) / (100 x 9.8)

h = 2,136.1 m

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The tension in the string when the ball is at the bottom of the path is 2.61 Newtons.

A tension is simply referred to as a force along the length of a flexible medium such as strings, cable, ropes etc.

Tension in a string revolving can be determined using the expression;

T = mv² / r

Where m is mass of object, v is velocity and r is radius ( length of string )

Given the data in the question;

To determine tension in the string, we substitute our given values into the expression above.

T = mv² / r

T = (0.182kg × (3.74m/s)²) / 0.977m

T = (0.182kg × 13.9876m²/s²) / 0.977m

T = (2.5457432kgm²/s²) / 0.977m

T = 2.61kgm/s²

T = 2.61N

Therefore, the tension in the string when the ball is at the bottom of the path is 2.61 Newtons.

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Tidal volume is the amount of air that moves in and out of the lungs, while vital capacity is the maximum amount of air a person can expel.

Tidal volume is the amount of air that moves in or out of the lungs with each respiratory cycle.

Vital capacity is the maximum amount of air a person can inhale after a maximum exhalation or maximum amount of air a person can expel from the lungs after a maximum inhalation.

Tidal volume is the amount of air that moves in and out of the lungs, while vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation.

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Answer:

6.25  gm

Explanation:

1 /2  * 1/2 * 1/2 = 1/8th of the original

  50/8 = 6.25 gm

Answer:

its b

Explanation:

trust

Answer:

Once the ball is place at the position A and then released, It will accelerate towards the mean position under its weight. At the mean piston it again maximum velocity and momentum so its moves up-to the position B due to inertia. At B it has zero velocity so zero kinetic energy but maximum potential energy.

Again from point B it will move towards O under the restoring Force having maximum velocity at O but does not stop at O due to inertia and will go up to A. In this way the ball will continue to oscillate between the points A and B about the point O, it has simple harmonic motion.

Explanation:

Explanation:

lambda = h/mv

hieght is decreasing

velocity is increasing

therfore the wavelength is decreasing.

The gauge pressure in the higher part will be 136 kph. The pressure is found with the help of the Bernoulli equation.

The difference between absolute pressure and atmospheric pressure is known as gauge pressure. Relative pressure is another name for gauge pressure.

From the continuity equation;

[tex]\rm A_1v_1=A_2v_2 \\\\ \rm \frac{\pi}{4}(6)^2 \times 5 = \frac{\pi}{4}(3)^2 v_2 \\\\ v_1 = 20 \ m/sec[/tex]

The gauges pressure in the higher part is found as;

From the Bernoullis equation;

[tex]\rm \frac{P_1}{\rho g} + \frac{v_1^2}{2g} +Z_1 = \frac{P_2}{\rho g} + \frac{v_2^2}{2g} +Z_2 \\\\ \frac{80 \times 10^3 }{\rho g} + \frac{(5)^2}{2g} +0= \frac{p_2}{\rho g} + \frac{(20)^2}{2g} +3 \\\\ \frac{80 \times 10^3 - P_2 }{1000 \times 9.81 } = \frac{20^2-5^2}{2 \times 9.81 } +3 \\\\ P_2 = 136 \ kpa[/tex]

Hence the gauge pressure in the higher part will be 136 kpa.

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Explanation:

to find the velocity across the positive y direction we multiply 100 by sin60.

to find the velocity across the positive x direction we multiply 100 by cos60.

horizontal: 50 km/h

vertical: 86.6 km/h

make sure to ask if you need any further guidance.

Answer:

U have to draw 3 circles

take a specific point and draw 3 circles of different size from the same point.

When carbon dioxide is in ocean water it bonds to carbonate, preventing its use by coral reefs and currents.

Carbon dioxide (CO2) is made use of by aquatic photosynthetic organisms to make their own food.

Some examples of aquatic organisms that makes use of carbon dioxide are:

However, when carbon dioxide is in ocean water it bonds to carbonate, preventing its use by coral reefs and currents.

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Answer:

coral reefs and shellfish

Explanation:

Both need carbonate

When it rains, dust particles and oil residues float on the water and this reduces the traction of tires.

This concept refers to a force between the tires and road that causes the movement of the wheels or vehicle is slower.

It is well-known more accidents occur when it rains, which is caused by cars slidding on the road. This is because when it rains traction or the grip of the wheel drastically reduces.

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Placing the electromagnetic radiation in order from the lowest energy to the highest energy :  ( 2 ) C,A,B

In the electromagnetic spectrum the electromagnetic radiation with the shorter wavelength possess a higher energy while the electromagnetic radiation with a longer wavelength possess the lower energy.

The electromagnetic radiation as listed in the question with the longest wavelength is the radio waves therefore it possess the lowest energy while the radiation with the shortest wavelength is the gamma rays therefore it possess the highest energy.

Hence we can conclude that Placing the electromagnetic radiation in order from the lowest energy to the highest energy :  ( 2 ) C,A,B

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Answer:

Transverse

Explanation:

The direction of propagation is perpendicular to the motion of the hand. Therefore the wave undergoes a vertical stretching, which is characteristic of transverse waves. Longitudinal waves stretch horizontally.

The materials that are conductors are Metal doorknob, Silver, Gold, Copper, Metal coat hanger, Paper clip, while insulators are Carpet, Wood, Rubber, Bulletin board, Clothing, Plastic.

Conductors are materials that allow electric current to pass through them.

Insulators are materials that do not allow electric current to pass through them.

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See below~

Explanation:

Given, P = 2 kVA = 2 kW,

t = 90 min = 1.5 h

(a) (i) Electrical Energy Consumed = power * time

= 2 kW x 1.5 h

= 3 kWh ( or 3 commercial unit)

(ii) Since 1 kW = 3.6 x 10^6 J

therefore,

Electrical energy consumed = 3 x 3.6 x 10^6 J

= 1.08 x 10^7 J

(b) Cost of electricity

= energy consumed in kWh x cost per kWh

= 3 x Rs 4.50 = Rs. 13.50

When a positively charged sphere is brought near the north pole of a magnet, the positively charged sphere will be attracted to the magnet.

When a positively charged object is brought near the north pole of a magnet, the positively charged object will be attracted to the magnet beacuse of polarity.

Positively charged metals have the tendency to show the polarization of charges.

Thus, when a positively charged sphere is brought near the north pole of a magnet, the positively charged sphere will be attracted to the magnet. Also, if the south pole is brought near the sphere, the positively charged sphere will repel the magnet.

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Answer:

d) Wind

Explanation:

Secondary energy is energy produced by converting energy available in its natural state in the environment. Hence Wind is a primary source not a secondary source

a. 10 kW b. 67 kW c. 140 kW d. 245 kW e. 21 kW

Answer:

1314362.5 gm     or   1314.3625 kg

Explanation:

A cube has all three dimension =

  55 * 55 * 55 = 166375  cm^3

166 375 *   7.9 g/ cm^3 = 1314362.5 gm

Answer:

Explanation:

c. By using the Select Data button and the Select Data Source optionExplanation:A scatter plot is a plot which is used to plot the points of the data on the horizontal and the vertical axis also it depicts how one variable is affected by the another. After preparing the scatter plot to enter the data in the scatter plot we need to use the data button and then data source option so that the data could be entered in the scatter plothence, option c is correct

The two graphs, x vs. t and y vs. t that are displacement vs time  appear by using the Select Data button and the Select Data Source option.

Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude.

A scatter plot is a plot which is used to plot the points of the data on the horizontal and the vertical axis also it depicts how one variable displacement is affected by the another. After preparing the scatter plot to enter the data in the scatter plot we need to use the data button and then data source option so that the data could be entered in the scatter plot.

The two graphs, x vs. t and y vs. t that are displacement vs time  appear by using the Select Data button and the Select Data Source option.

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Answer:

If the amplitude increases the volume increases and vice versa.So therefor the volume depends on how high or low the amplitude is.

When two or more sound waves occupy the same space, they affect one another. The waves do not bounce off of each, but they move through each other. The resulting wave depends on how the waves line up.

With constructive interference, two waves with the same frequency and amplitude line up – the peaks line up with peaks and troughs with troughs as in diagram A above. The result is a wave that has twice the amplitude of the original waves so the sound wave will be twice as loud.

Las diferencia de potencial indica el valor de la fuerza o potencial eléctrico entre dos puntos, lo cual permite llevar electricidad a diferentes areas.

La diferencia de potencial indica la fuerza ejercida por una corriente eléctrica entre dos puntos equidistantes.

La diferencia de potencial se mide en Volts, es decir, en voltaje (V), el cual indica la fuerza de la energía eléctrica que se puede transmitir entre dos puntos.

La diferencia de potencial nos permite tener energía en una vivienda o en una industria, como asi tambien usar un artefacto que requiera de electricidad para funcionar.

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Answer:

Third Law Of Motion

Explanation:

When we let go of the end, the air rushes out and pushes against the air around the balloon to move it in the opposite direction. Newton describes this effect in his third law.

The blowing up of a balloon and letting it go is an example of newton's third law of motion or action-reaction law.

According to Newton's third law, when two bodies come into contact, they exert forces on one another that really are equal in strength and pointed in the opposite direction. The third law is frequently referred to as the law of actions and consequences.

This law applies to bodies in constant or rapid motion and is crucial for understanding problems of static balance, where all forces are in balance. It doesn't only use bookkeeping techniques; the forces it portrays are actual forces. A book laying on a table, for instance, exerts a downwards force equal to its weight on the table. The third law states that the book is subjected to an equal and opposing force from the table.

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