3 Q3 (35 pts): Consider a piston-cylinder system with a side charging port. The system is initially filled with 5 m air, and then undergoes a charging process in which 6 kg of air is transferred into the system from a reservoir (not shown) at 280 K and 4 bar. During the process, the system is at a constant pressure of 2 bar and a constant temperature of 300 K. Heat is allowed to transfer between the system and the surroundings. Assume air behaves as an ideal gas with Cp 1.005 kJ/kg K and R = 0.287 kJ/kg K, a) The work (W) done by the system during the process. (10 pts) b) The heat (Q) involved during the process. (10 pts) c) Is the process possible? Support your answer with entropy calculations. (15 pts) = Q Piston Cylinder Charging