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aleksklad [387]

2 years ago

10

Dr. Evil stands on a 150 m high cliff and drops the kittens straight down. Fill out the following table that shows how the veloc

ity and acceleration of the kittens change with time during their fall.

1 answer:

riadik2000 [5.3K]2 years ago

3 0

I would say d if I remember right I think that’s what I put and got right sorry if it’s wrong

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Balanced Forces acting on an object will not change the object's motion. Unbalanced Forces acting on an object will change the c

ale4655 [162]

Answer:

TRUE

Explanation:

The answer is true.

Balance forces acting on a body will not change the motion of the body because the body experiences no net resultant force in one direction. When any body experiences equal forces with opposite directions, the net force or the resultant force experience by the body is zero.

In case of an unbalanced forces, there is a net force acting in one direction and so it causes the body to change in its state of motion in the direction of the net force.

4 0

3 years ago

The classic Millikan oil-drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oi

Sati [7]

Answer:

$1.56\times 10^5 N/C$

Explanation:

The electric field that will balance the weight of the oil drop can be calculated using the following:

electric force, F = e E ( where, e is the charge of an electron and E is the electric field)

weight, W = 2.5 ×10⁻¹⁴ N

e E = W

$E =\frac{W}{e}$

Substitute the values:

$E =\frac{ 2.5 \times 10^{-14} N}{1.6\times10^{-19}C}= 1.56\times 10^5 N/C$

6 0

3 years ago

Read 2 more answers

The pressure of a gas always increases with increasing temperature. A. True B. False

olga2289 [7]

True

Gay Lussac's Law

When the volume is constant, the gas pressure is proportional to its absolute temperature

$\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}$

7 0

2 years ago

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A 200 kg chunck of lead falls from a hight of 30m and smashes into a rigid floor. calculate the increse in internal engery

mr Goodwill [35]

Answer:

$\Delta E=58800\ J$

Explanation:

Given:

mass of lead chunk, $m=200\ kg$

height of the fall, $h= 30\ m$

Assuming the collision to be perfectly inelastic the whole kinetic energy of the chunk is lost after the collision.

Here when the chunk is at the given height it has a potential energy which on falling transforms into kinetic energy of the chunk.

So, increase in the internal energy of the system after the collision is :

$\Delta E=m.g.h$

$\Delta E=200\times 9.8\times 30$

$\Delta E=58800\ J$

5 0

3 years ago

What happens to static and kinetic friction as mass increases?

Vikentia [17]

Static friction is a force between two objects that are not moving relative to one another. For example, an object resting on a slope, but not sliding down the slope, is kept in its position by static friction. Static friction must be overcome to cause an object to move across a surface.

5 0

3 years ago