Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in.2, a temperature of 70°F, and a volumetric flow rate of 500 ft3/min. The air velocity in the exit pipe is 700 ft/s and the exit pressure is 146 lbf/in.2 If each unit mass of air passing from inlet to exit undergoes a process described by pv1.34 = constant, determine (a) the exit temperature, in °F, and (b) the diameter of the exit pipe, in inches.