Answer to Question #52509 in Physics for john

Question

The working substance of an engine is 1.00 mol of a diatomic ideal gas. The engine operates in a cycle
consisting of three steps: (1) an adiabatic expansion from an initial volume of 10.0 L to a pressure of 1.00 atm and
a volume of 20.0 L, (2) a compression at constant pressure to its original volume of 10.0 L, and (3) heating at
constant volume to its original pressure. Take γ = 1.4.
Sketch the cycle on a PV diagram and find its efficiency.