An ideal gas initially at Pi, Vi, and Ti is taken through a cycle as in Figure

Question:

An ideal gas initially at Pi, Vi, and Ti is taken through a cycle as in Figure P20.38.
(a) Find the net work done on the gas per cycle.
(b) What is the net energy added by heat to the system per cycle?
(c) Obtain a numerical value for the net work done per cycle for 1.00 mol of gas initially at 0°C.