Air is compressed steadily in a compressor from100 kPa and 300 K to 1 MPa and 500 K. The compressor is not well insulated and a heat loss of60 kJ/kg

occurs during the process. Assuming the changes in kinetic and potential energies are negligible, determine the specific work input to the compressor, in kJ/kg. (Use table A-17 for ideal gas properties of air) 252.83