A cycle, composed of 3 process, is polytropic compression(n=1.5)from 137 kpa and 38 degree to state 2, constant pressure from state 2 to state 3, and constant colume from state 3 and to state 1. The heat rejected is 1560 kJ/kg, and the substance is air. Determine a.pressures, temperature and specific volumes around the cycles: b. the heat added; c. the heat rejected; d. the work for each process.