Consider air in a piston-cylinder assembly. Initially, the air is at P1 = 2bars and T1 = 600K . The air is compressed isothermally in quasi-equilibrium to P2 = 4bars without friction between the piston and cylinder.
What is the external force in N for this particular process at state 1, state 2 and an intermediate state at P1 = 1.5bars ? The piston area is 0.05 m^2.
What is the heat transfer in kJ if there is no change in the system's internal energy. Neglect changes in KE and PE.