Thermodynamics question. 3) Gas is contained in a vertical piston-cylinder apparatus as shown below. The piston is fixedto a massless rigid structure (bar connected to a plate). This structure is attached to supportweights if added. Initially there is no mass on the plate such that the initial gas pressure isP1 Patm= 14.7 psia and the initial gas volume is Vi = 1 ft'. The piston surface area Ap 1ft. A mass mw = 720 lbm is placed on the plate which causes the piston to compress the gas.The compression process of the gas follows the relationship PV = C. Also for thethe change in energy of the gas is zero. DetermineprocessDeterminea) the piston displacement, Ax [ft].b) the work done on the gas, Wgas [ft-lbf], andc) the heat transfer from the gas. Q12 [Btu].masslessplateatmmasslessnigidstructureApgas

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Gas is contained in a vertical piston-cylinder apparatus as shown below. The piston is fixed to a massless rigid structure (bar connected to a plate). This structure is attached to support weights if added. Initially there is no mass on the plate such that the initial gas pressure is P Patm ft. A mass mw=720 lbm is placed on the plate which causes the piston to compress the The compression process of the gas follows the relationship PV = C. Also for the process the change in energy of the gas is zero. Determine = 14.7 psia and the initial gas volume is V =1 ft. The piston surface area Ap = 1 %3D gas. %3D Determine a) the piston displacement, Ax [ft]. b) the work done on the gas, Wga: [ft-lbf], and c) the heat transfer from the gas. Q12 [Btu].