A 67.5-kg person typically eats about 2250 kcal per day, 21.0% of which goes to mechanical energy and the rest to heat. If she spends most of her time in her apartment at 24.0°C, what is the entropy change AS of her apartment in one day? AS = kJ/K Does the entropy of the apartment increase or decrease? It decreases, because the person's entropy increases, and the net entropy change of the person and apartment is zero. It increases, because the entropy of each and every object involved in an irreversible isothermal process increases. It decreases, because the temperature of the apartment is lower than that of the person, assuming normal body temperature. It increases, because the apartment receives heat from the person, meaning the heat transfer into the apartment is positive.

A 67.5-kg person typically eats about 2250 kcal per day, 21.0% of which goes to mechanical energy and the rest to heat. If she spends most of her time in her apartment at 24.0°C, what is the entropy change AS of her apartment in one day? AS = kJ/K Does the entropy of the apartment increase or decrease? It decreases, because the person's entropy increases, and the net entropy change of the person and apartment is zero. It increases, because the entropy of each and every object involved in an irreversible isothermal process increases. It decreases, because the temperature of the apartment is lower than that of the person, assuming normal body temperature. It increases, because the apartment receives heat from the person, meaning the heat transfer into the apartment is positive.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 10OQ: Assume a sample of an ideal gas is at room temperature. What action will necessarily make the...

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