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.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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