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Yuliya22 [10]
2 years ago
13

A 0.25 kg book falls off a 2 m shelf on to a 0.5 m chair. What was the change in GPE?

Physics
1 answer:
Snowcat [4.5K]2 years ago
6 0

The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.

If we're solving for the change in GPE, then:

∆U_{g} = mg∆H

<u>Input our given values for m and g:</u>

∆U_{g} = 0.25 * 9.80 * ∆H

<u>The book falls from 2 meters high to 0.5 meters high, so:</u>

∆U_{g} = 0.25 * 9.80 * (2.0 - 0.5)

∆U_{g} = 0.25 * 9.80 * 1.5

∆U_{g} = 3.675 (J)

<u>Adjust for significant figures:</u>

∆U_{g} = 3.7 (J)

The change in gravitational potential energy was 3.7 (J)

If you have any questions on anything I did to get to the answer, just ask!

- breezyツ

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2 years ago
If a negative charge is initially at rest in an electric field, will it move toward a region of higher potential or lower potenti
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Positive charges will move downhill because of convention. It is to stay in accordance with other potential theories, particularly gravity, where the "charge" is mass, that moves downwards in the gravitational potential field expressed by ϕ(r)=−GM|r|ϕ(r)=−GM|r|. In an electronic system, howbeit, positive charges are fixed in their position within a component (e.g., a wire), therefore instead of the mobile,the negative charges, electrons, move uphill.

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3 years ago
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Answer:

s = 3 m

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the position of the constant velocity and accelerating vehicles are

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