Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 18 - The Laws of Thermodynamics - Problems and Conceptual Exercises - Page 647: 63

Answer

(a) increase (b) $III$

Work Step by Step

(a) When we rub our hands together, heat is produced because of friction and we know that the heat is directly proportional to the entropy, so the entropy will also increase. (b) The best explanation is option III -- that is, the heat produced by rubbing raises the temperature of your hands and the air, which increases the entropy.
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