SAT Subject Physics Practice Question 557: Answer and Explanation

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Question: 557


For the gas shown below, 70 Joules of energy is added between AB. The gas does 35 Joules of work. How much heat is exhausted between CD?

A. .5J
B. 2J
C. 35J
D. 105J
E. 2,450J

Correct Answer: C


The correct answer is (C). The heat added to the system minus the work done by the system yields the heat that is exhausted between points CD.

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