Hot air steadily enters a gas turbine at 5 bar, 900 K and exits at 1 bar, 600 K and a velocity of 100 m/s. The mass flow rate of air is 10 kg/s. Ignoring the heat transfer, changes in potential energy, and the kinetic energy in inlet, calculate (a) The power output from this turbine, in kW. (b) The cross-section area of the exit, in m2.