5 kg of air is contained within a piston-cylinder assembly and undergoes the following cycle:
1-2 constant pressure expansion to (1 bar, 300K)
2-3 constant volume process to (5 bar)
3-4 polytopic compression with n=1.3 to V4 = 0.5*V3
4-1 V4=V1 (not adiabatic)
Find the heat transfer and work for each process.