Steam enters a well-insulated turbine operating at steady state at 4 mpa with a specific enthalpy of 3015.4 kj/kg and a velocity of 10 m/s. the steam expands to the turbine exit where the pressure is 0.07 mpa, specific enthalpy is 2500 kj/kg, and the velocity is 90 m/s the mass flow rate is 17 kg/s neglecting potential energy effects, determine the power developed by the turbine, in kw