Answer:
The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine is called mechanical advantage.
what would happen if measurements such as mass,length,volume,or temperature weren't standardized and everyone made up their own units
Answer:
The world would have been blown up by now.
Explanation:
Hypothetically, lets say that someone gave Kim Jong boi a cup of coffee.
He gets mad at the "public servant" since it didn't contain 3 posafa43asdunds of sugar which makes him "big".
The public servant claims they added jfoaj4su38093 units of sugar, which is equivalent to 3 posafa43asdunds.
He gets mad and launches big cannons at Trump since he blames Boe Jiden.
If a neutron’s relative mass is listed as 1, what would be the relative mass of a proton and an electron?
Answer:
The relative mass of the proton would be 1 and that of the electron
would be about 1/1840.
under what condition do the values of gravitational force and gravitational constant become same or equal
Answer:
The values of gravitational force and gravitational constant become same or equal when product of masses involved equals the square of distance between them.
a.
1
S = ut +
1/2
at2
i. u as subject.
Answer:
[tex]s = ut + \frac{1}{2} at^{2} \\ ut = s - \frac{1}{2} a {t}^{2} \\ u = (s - \frac{1}{2} a {t}^{2} ) \div t \\ u = (s - \frac{1}{2} a {t}^{2} ) \times \frac{1}{t} \\ \\ u = \frac{s}{t} - \frac{1}{2t} a {t}^{2} \\ \\ u = \frac{s}{t} - \frac{1}{2} at \\ [/tex]
I hope I helped you^_^
What is the kinetic energy of a 500kg car traveling 50m/s
Answer: 625000 J
Explanation:
KE= (1/2)mv^2
m=500kg
v=50m/s
KE= (1/2 )(500)(50)^2
= 625000 J
_________at any particular point in a liquid is _________ in all directions
Answer:
Pressure at any particular point in a liquid is transmitted in all directions
Explanation:
I hope you like my answer and my answer helped you .Question 6.2
Calculate the reading on A2
Answer:
2.25A
Explanation:
that is the answer
Which statement describes the motion of a ball as it drops onto a vertical spring?
a. The acceleration of the ball decreases as the spring shrinks.
b. The accIleration of the ball decreases as the spring extends.
c. The velocity of the ball changes from positive to negative as the spring shrinks.
d. The velocity of the ball changes from negative to positive as the spring extends.
Answer:
F = M a Newton's second law
F = - K x force exerted by compressed spring
a = - K x / M
a) is true because the ball originally is accelerated due to gravity and this acceleration will decrease as the spring in compressed
One could argue for (d) if the downward direction was designated as negative
Prior to maximum compression of the spring the velocity would negative and as the spring began to extend (and the ball began move upward) the velocity of the ball would change from negative to positive
1.
On a fishing trip you catch a bass, a rock cod, and a salmon with masses of 1.07 kg, 6.0 kg, and
6.05 kg, respectively. What is the total mass of your catch with the proper number of significant
figures?
The total mass of your catch is 13.1 kg
Since you have three fishes a bass, a rock cod, and a salmon with masses of 1.07 kg, 6.0 kg, and 6.05 kg, respectively,
The total mass of your catch = mass of bass + mass of rock cod + mass of salmon
= 1.07 kg + 6.0 kg + 6.05 kg
= 13.12 kg
Since the total mass of your catch is 13.12 kg and we have three catches with two catches to two decimal places and one catch to one decimal place.
We cannot have more decimal places in our answer than the number of decimal places in the number with the least number of decimal places.
Since the least number of decimal places is in the mass of the rock cod which is 6.0 kg, the total mass of our catch is thus 13.1 kg to one decimal place.
So, the total mass of your catch is 13.1 kg
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The elevators in the John Hancock building in Chicago move 783 ft in 33 s. What is this speed in miles per hour?
Answer:
16.18 mph
Explanation:
the speed of elevators =
(783×3600)/(33×5280) =
2,818,800/174,240 = 16.18 mph
write the maximum number of electrons that can be accommodated in the s,p,d,f subshells
Answer:
S=2,P=6,D=10,F=14. The total number of electrons contained by s,p,d,f subshells is 32
plz and I don't know this plz help me
Answer:
Newton
it is derived of mass and displacement
what do you mean by acceleration of a body 10\s?
Answer:
it means that the body is moving with acceleration increased of 10m in every second.
A crane can lift 5000 kg mass to the height 10m in 10 sec. What is its power?
Answer:
49.050 KW
Explanation:
work done = PE
= mgh
=5000×9.81×10
=490500J
power = workdone/Time taken
= 490500/10
= 49050 watts
= 49.050kW
one meter equals how many miles, yards, feet, inches?
Answer:
0.000621 mile
1.094 yards
3 feet 3.37 inches
39.37 inches
Answer:
1m = 0.000621371 miles = 1.09361 yards = 3.28084 feet = 39.3701 inches
2 ways that angular and linear momentum are alike and different
Answer:
Angular momentum is inertia of rotationmotion. Linear momentum is inertia oftranslation motion. The big difference is that the type of motion which is related to each momentum is different.
The quantity of matter inside the body is?
Answer:
MASS
Explanation:
mass is the quantity of matter contained in the body.
How many electrons can carbon accept from other atoms while bonding? (1 point)
two
six
eight
four
Answer: Four electrons
Explanation:
The number of electrons that can be accepted by carbon from other atoms while bonding is four. The correct option is D.
What is chemical bonds?A chemical bond is what holds atoms in molecules together. Electrostatic forces between positively charged atomic nuclei and negatively charged electrons, the positions of which in space are determined by quantum mechanics, generate bonds.
Atoms form chemical bonds to strengthen their outer electron shells. The chemical bonding type maximizes the stability of the atoms that form it.
Carbon forms covalent bonds with other elements or carbon atoms. Carbon compounds are extremely diverse, with sizes ranging from one to thousands of atoms.
Because carbon has four valence electrons, it can form four covalent bonds to achieve a full outer energy level.
Thus, the correct option is D.
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Motion is generally defined as an increase in distance
Answer:
motion is the act of changing location or position
Answer:
Motion is generally defined as an increase in distance with respect to time.
Without time it can't be said in motionHelp with these please
Answer:
I'll just give short and simple explanation .
Explanation:
when the distance between the masses are doubled but the masses remain the same then,
the gravitational force between two masses decrease by four times when the distance between them is doubled.
hope this helped you
any confusion then comment it.
How do you use a Beam Balance???
Your answer is in the attachment . Hope this helps.
A bullet fired from a pistol travelled 50 metres to the target in 0.08s. What was its speed?
Its speed is 4m/s
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A student has a block that has a volume of 150 cm3 and a density of 30 g/cm3
Answer:
mass of block = 4500g
Explanation:
density = mass/volume
mass = volume x density
= 150 x 30
= 4500 g
ASAP If the initial pressure of a gas is 100 kPa, initial volume is 1.0 L, and final pressure is 25 kPa, what is the final volume?
When no one answers your question...
The final volume is 4.0 liters.
We can calculate the final volume with Boyle's law:
[tex] P_{i}V_{i} = P_{f}V_{f} [/tex] (1)
Where:
[tex] P_{i}[/tex]: is the initial pressure = 100 kPa
[tex] V_{i}[/tex]: is the initial volume = 1.0 L
[tex]P_{f}[/tex]: is the final pressure = 25 kPa
[tex]V_{f}[/tex]: is the final volume =?
Hence, the final volume is:
[tex] V_{f} = \frac{P_{i}V_{i}}{P_{f}} = \frac{100 kPa*1.0 L}{25 kPa} = 4.0 L [/tex]
Therefore, the final volume is 4.0 liters.
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3. An electric motor is used to lift a 6.0 kg of mass through a height of 1 metre. The energy it uses is measure on an energy meter is 10 joules.
a) Calculate the work done in lifting the mass
Answer:
Climbing stairs and lifting objects is work in both the scientific and everyday sense—it is work done against the gravitational force. When there is work, there is a transformation of energy. The work done against the gravitational force goes into an important form of stored energy that we will explore in this section.

Figure 1. (a) The work done to lift the weight is stored in the mass-Earth system as gravitational potential energy. (b) As the weight moves downward, this gravitational potential energy is transferred to the cuckoo clock.
Let us calculate the work done in lifting an object of mass m through a height h, such as in Figure 1. If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system. This energy is associated with the state of separation between two objects that attract each other by the gravitational force. For convenience, we refer to this as the PEg gained by the object, recognizing that this is energy stored in the gravitational field of Earth. Why do we use the word “system”? Potential energy is a property of a system rather than of a single object—due to its physical position. An object’s gravitational potential is due to its position relative to the surroundings within the Earth-object system. The force applied to the object is an external force, from outside the system. When it does positive work it increases the gravitational potential energy of the system. Because gravitational potential energy depends on relative position, we need a reference level at which to set the potential energy equal to 0. We usually choose this point to be Earth’s surface, but this point is arbitrary; what is important is the difference in gravitational potential energy, because this difference is what relates to the work done. The difference in gravitational potential energy of an object (in the Earth-object system) between two rungs of a ladder will be the same for the first two rungs as for the last two rungs.
Converting Between Potential Energy and Kinetic Energy
Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem). We will find it more useful to consider just the conversion of PEg to KE without explicitly considering the intermediate step of work. (See Example 2.) This shortcut makes it is easier to solve problems using energy (if possible) rather than explicitly using forces.
More precisely, we define the change in gravitational potential energy ΔPEg to be ΔPEg = mgh, where, for simplicity, we denote the change in height by h rather than the usual Δh. Note that h is positive when the final height is greater than the initial height, and vice versa. For example, if a 0.500-kg mass hung from a cuckoo clock is raised 1.00 m, then its change in gravitational potential energy is
mgh=(0.500 kg)(9.80 m/s2)(1.00 m) =4.90 kg⋅m2/s2=4.90 Jmgh=(0.500 kg)(9.80 m/s2)(1.00 m) =4.90 kg⋅m2/s2=4.90 J
Note that the units of gravitational potential energy turn out to be joules, the same as for work and other forms of energy. As the clock runs, the mass is lowered. We can think of the mass as gradually giving up its 4.90 J of gravitational potential energy, without directly considering the force of gravity that does the
A box is 300 kg & it covers the area of 150 m2 find the pressure exerted by the box in the ground.
Answer:
If we assume that the box is a cube with 150 m² surface area
Area of 1 face = 150 m² / 6 = 25 m²
The box will exert a downward force of
Force = mass * acceleration due to gravity
Force = 300 kg * 9.81 m/s² N
Force = 2943 N
The box exerts a pressure ( force / unit area) = 2943 N / 25 m²
Pressure = 117.7 N/m²
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9. Liquid A has a density of 1.27 g/mL and liquid B has a density of 0.78 g/mL. Both are poured into the same container. If the liquids do not react chemically, what will happen to the liquids ________________?
Liquid A has a density of 1.27 g/mL and liquid B has a density of 0.78 g/mL. Both are poured into the same container. If the liquids do not react chemically then the liquid B which has a density of 0.78 g/m would come over the liquid because it is a lighter fluid having less density than the liquid A
What is density?It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.
formula for density
ρ = mass / volume
Liquids A and B have densities of 1.27 and 0.78 grams per milliliter, respectively. The same container receives both of them. If there is no chemical reaction between the liquids, then liquid B, which has a density of 0.78 g/m, would emerge on the top because it is a lighter fluid and has less density than liquid A.
Thus, If there is no chemical reaction between the liquids, then liquid B, which has a density of 0.78 g/ml, would emerge on the top because it is a lighter fluid and has less density than liquid A.
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What is 2.34x10^3x5.1x10^-2 in significant figures.
Answer:
5 significant figures
Explanation:
As the question does not state any term in 'significant figures', I will provide the number and the number of significant figures.
First of all, the number. 2.34 × 10³ = 2340, and 5.1 × 10^-2 = 0.051, therefore. 2340 × 0.051 = 119.34.
This will be equal to 5 significant figures.
help me i dont understand
Answer:
B
Explanation:
At the highest/maximum point the vertical velocity is zero because as the projectile is launched it eventually changes direction. At this instant it momentarily stop causing the maximum velocity to be zero.
hopefully this makes sense
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estimate my age in seconds 14 years old