A 2.75-g copper coin at 20.0°C drops 60.0 m to the ground.(a) Assuming 55.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the internal energy of the coin, determine thecoin's final temperature.°C(b) Does the result depend on the mass of the coin?YesNoExplain your answer.

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Asked Nov 6, 2019
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A 2.75-g copper coin at 20.0°C drops 60.0 m to the ground.
(a) Assuming 55.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the internal energy of the coin, determine the
coin's final temperature.
°C
(b) Does the result depend on the mass of the coin?
Yes
No
Explain your answer.
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A 2.75-g copper coin at 20.0°C drops 60.0 m to the ground. (a) Assuming 55.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the internal energy of the coin, determine the coin's final temperature. °C (b) Does the result depend on the mass of the coin? Yes No Explain your answer.

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Expert Answer

Step 1

(a)

Consider a copper coin of mass m is at initial temperature Ti and at height h from the ground level.

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m 2.75 g h 60 m T 20° C

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Step 2

Since 55% of its potential energy goes into raising its internal energy, Use energy conservation and plug the required values ...

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55 (mgh) тсAT 100 c(T,-T) 0.55gh 0.55gh +T Tf= .....1) C 0.55(9.8 m/s2)(60 m) T, (20° C) 385 kg.°C T 20.84° C 11 f

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