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Back to 15.1 The First Law of Thermodynamics

15.1 Exercise 18

Avg difficulty 2.5

Suppose a woman does 500 J of work and 9500 J of heat transfer occurs into the environment in the process. (a) What is the decrease in her internal energy, assuming no change in temperature or consumption of food? (That is, there is no other energy transfer.) (b) What is her efficiency?

OpenStax College Physics 2e, 15.1 The First Law of Thermodynamics, exercise 18

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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.