The first law of thermodynamics states that the change U
Chapter 15, Problem 15.50(choose chapter or problem)
The first law of thermodynamics states that the change U in the internal energy of a system is given by U Q W, where Q is the heat and W is the work. Both Q and W can be positive or negative numbers. Q is a positive number if ________, and W is a positive number if ________. (a) the system loses heat; work is done by the system (b) the system loses heat; work is done on the system (c) the system gains heat; work is done by the system (d) the system gains heat; work is done on the system S
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