Chapter 20, Problem 20.39P

CALC You build a heal engine that takes 1.00 mol of an ideal diatomic gas through the cycle shown in Fig. P20.39. (a) Show that process ab is an isothermal compression. (b) During which process(es) of the cycle is heat absorbed by the gas? During which process(es) is heat rejected? How do you know? Calculate (c) the temperature at points a, b, and c; (d) the net heat exchanged with the surroundings and net work done by the engine in one cycle; (e) the thermal efficiency of the engine.

Figure P20.39