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Physics / Physics with MasteringPhysics 4 / Chapter 18 / Problem 63P

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

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CE Predict/Explain (a) If you rub your hands together,

Chapter 18, Problem 63P

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QUESTION:

Problem 63P

CE Predict/Explain (a) If you rub your hands together, does the entropy of the universe increase, decrease, or stay the same? (b) Choose the best explanation from among the following:

I. Rubbing hands together draws heat from the surroundings, and therefore lowers the entropy.

II. No mechanical work is done by the rubbing, and hence the entropy does not change.

III. The heat produced by rubbing raises the temperature of your hands and the air, which increases the entropy.

Questions & Answers

QUESTION:

Problem 63P

CE Predict/Explain (a) If you rub your hands together, does the entropy of the universe increase, decrease, or stay the same? (b) Choose the best explanation from among the following:

I. Rubbing hands together draws heat from the surroundings, and therefore lowers the entropy.

II. No mechanical work is done by the rubbing, and hence the entropy does not change.

III. The heat produced by rubbing raises the temperature of your hands and the air, which increases the entropy.

ANSWER:

Step 1 of 3

We have to choose the correct statement from the given set.

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