Air at a pressure of 2 bar, a temperature of 52oc and a mass flow rate of 0.45 kg/s enters an insulated duct having different inlet and exit diameters. the diameter of the duct exit is 5 cm, the exit velocity is 225 m/s, and the pressure at the exit is atmospheric. (5a). (4p) determine the temperature of the air at the exit. (5b). (6p) determine the rate of entropy generation within the duct.