An adiabatic gas turbine expands air at 1300 kPa and 500C to 100 kPa and 127C. Air

Question:

An adiabatic gas turbine expands air at 1300 kPa and 500°C to 100 kPa and 127°C. Air enters the turbine through a 0.2-m2 opening with an average velocity of 40 m/s, and exhausts through a 1-m2 opening. Determine
(a) The mass flow rate of air through the turbine and
(b) The power produced by the turbine.