Solved: The internal energy of a system changes because
Chapter 15, Problem 15.60(choose chapter or problem)
The internal energy of a system changes because the system gains 165 J of heat and performs 312 J of work. In returning to its initial state, the system loses 114 J of heat. During this return process, (a) what work is involved, and (b) is the work done by the system or on the system?
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