Air expands through a nozzle from a chamber pressure and temperature of 300 psia and 1000 R, respectively, to an exit pressure of 5 psia. During the expansion, the enthalpy decreases by 3500 Btu/slug. Assume that the expansion is adiabatic with negligible frictional effects and that the air behaves as a calorically and thermally perfect gas.
a) What is the velocity of the air at the exit?
b) What is the temperature of the air at the exit?