Nitrogen gas enters a turbine operating at steady state through a 2 inch diameter duct with a velocity of 200 ft/s, a pressure of 50 lbf/in^2, and a temperature of 1000 R. At the exit, the velocity is 2 ft/s, the pressure is 20 lbf/in^2, and the temperature is 700 R. Heat transfer from the surface of the turbine to the surroundings occurs at a rate of 16 Btu per lb of nitrogen flowing. Determine the power developed by the turbine in horsepower.