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Back to 15.6 Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy

15.6 Exercise 16

Avg difficulty 2.5

The Sun radiates energy at the rate of 3.80×1026 W3 . \text{80} \times \text{10}^{\text{26}} \text{ W} from its 5500º C\text{5500}º\text{ C} surface into dark empty space (a negligible fraction radiates onto Earth and the other planets). The effective temperature of deep space is −270º C- \text{270}º\text{ C}. (a) What is the increase in entropy in one day due to this heat transfer? (b) How much work is made unavailable?

OpenStax College Physics 2e, 15.6 Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy, exercise 16

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.