PHYSICS HIGH SCHOOL

A rock at the edge of a 200-m high cliff has more potential energy than an equal sized rock at the edge of a 600-m high cliff. True or False

Answers

Answer 1

Answer:

Answer: The given statement is False.

Explanation:

Potential energy is defined as the energy possessed due to the height of the object.

Mathematically,

$E_p=mgh$

where,

$E_p$ = potential energy of the rock

m = mass of the rock

g = acceleration due to gravity = $9.8m/s^2$

h = height of the cliff from where the rock is thrown

When height of the cliff is 200 m

Putting values in above equation, we get:

$E_p=m* 9.8* 200m\n\nE_p=1960m$

When height of the cliff is 600 m

Putting values in above equation, we get:

$E_p=m* 9.8* 600m\n\nE_p=5880m$

So, $E_p(60m)>E_p(200m)$

Potential energy of the rock at 600-m high cliff is more than the potential energy of the rock at 200-m high cliff

Hence, the given statement is False.

Answer 2

Answer: It is false. The higher an object is the more potential energy they have.

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Answers

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Which of the following is not accurate when describing solids? A. Solids are better conductors of heat than liquids B. The amount of pressure exerted by a solid is solely dependent on its mass. C. Solids with many air pockets are good insulators. D. Molecules in solids are closer together than molecules in liquids.

Answers

Answer;

B. The amount of pressure exerted by a solid is solely dependent on its mass.

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Answers

The refractive index of a substance is the ratio . . .

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Answers

Wellll, let me think about that ...

I don't think I'd agree that you can characterize the amplitude of
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Answers

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Answers

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