A steady-flow, adiabatic air turbine operates such that air enters at 4 MPa, 360 ^o C through a 0.5 m ² opening with a velocity of 10 m/s. Air leaves the turbine at 100kPac, 0 ^o C through a 2 m ² opening. What is the mass flow rate through this device, the air velocity at the turbine outlet, and power produced by this turbine (neglecting kinetic and potential energy effects?)