Ammonia in a piston–cylinder assembly undergoes two processes in series. initially, the ammonia is saturated vapor at p1 5 100 lbf/in.2 process 1–2 involves cooling at constant pressure until x2 5 75%. the second process, from state 2 to state 3, involves heating at constant volume until x3 5 100%. kinetic and potential energy effects are negligible. for 1.2 lb of ammonia, determine (a) the heat transfer and work for process 1–2 and (b) the heat transfer for process 2–3, all in btu.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s