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5. Two kilograms of ideal gas air with R=0.287kJ/kgK and k=1.4 undergoes the following two processes in a piston-cylinder assembly. Determine the overall work and heat transfer for the two-step process. Effects of kinetic and potential energy are negligible, and the constant specific heat approximation can be used. At the start (state 1) the air is at 27C and 1atm. Process 1-2: Constant-volume heating until pressure increases 10%. Process 2-3: Constant temperature expansion back to 1atm. Answers: W=18.05kJ and Q=61.1kJ