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A System Is Acted on by Its Surroundings in Such

Question 87

Multiple Choice

A system is acted on by its surroundings in such a way that it receives 80 J of heat while simultaneously doing 20 J of work.What is its net change in internal energy?


A) 100 J
B) 60 J
C) zero
D) −60 J
E) −100 J

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