A nozzle receives 0.5 kg/sec of air at a pressure of 2700 KPaa and a velocity of 30 m/sec and with an enthalpy of 923.0 KJ/Kg, and the air leaves at a pressure of 700 Kpaa and with an enthalpy of 660.0 KJ/Kg. Determine the exit velocity from the nozzle for a) adiabatic flow; and b) flow where the heat loss is 1.5 KJ/Kg.