Answer: A gas is enclosed in a container tted with a
Chapter 12, Problem 12.61(choose chapter or problem)
A gas is enclosed in a container tted with a piston of cross-sectional area 0.10 m2. The pressure of the gas is maintained at 8 000 Pa while energy is slowly added by heat; as a result, the piston is pushed up a distance of 4.0 cm. (Recall that any process in which the pressure remains constant is an isobaric process.) (a) If 42 J of energy is added to the system by heat during the expansion, what is the change in internal energy of the system? (b) If 42 J of energy is added by heat to the system with the piston clamped in a xed position, what is the work done by the gas? What is the change in its internal energy?
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