Air is compressed steadily in the compressor of Figure 1. The inlet and exit conditions are shown; the compressor loses 15 kW of heat to the surroundings. Treat air as an ideal gas with R = 0.287 kJ/kg·K and c_{p} = 1.005 kJ/kg·K, and neglect the changes in kinetic and potential energy. Determine (a) the mass flow rate of air (in kg/s) and (b) the power input to the compressor (in kW).