A horizontal adiabatic air compressor is running with a known second-law efficiency of = 0.8. The mass flow rate is 5 kg/s and input (in = 1) and output (out = 2) Temperatures T1 = 300 K and T2 = 600 K, and velocities v1 = 50 m/s and v2 = 25 m/s of the air are known. The compressor is working at steady-state and does no work on the surroundings. The surrounding temperature and pressure are a constant 300 K and 1 atm. respectively