Question: Air contained within a piston cylinder assembly undergoes three processes in series: Process 1-2: Compression at constant pressure from P1=10 lbf/in2, V1= 4ft3 to state

Air contained within a piston cylinder assembly undergoes three processes in series:
Process 1-2: Compression at constant pressure from P1=10 lbf/in2, V1= 4ft3 to state 2.
Process 2-3: Constant-volume heating to state 3, where P3= 50 lbf/in2.
Process 3-1: Expansion to the initial state, during which the pressure-volume relationship is PV = constant.
Sketch the processes in series on p-V coordinates. Evaluate
(a) The volume at state 2, in ft3, and
(b) The work for each process, in Btu.

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