Avertical piston-cylinder assembly containing a gas is placed on a hot plate. the piston initially rests on stops and has a mass of 50 kg, while atmospheric pressure is patm = 101.325 kpa. let the area of the piston be a = 0.01 m2 and assume that gravity is g = 9.81 m/s2 . a) (5 pts) at what pressure, in kpa, will the piston begin to rise? b) (5 pts) assume the piston rises 10 cm. if the amount of work done by the gas equals the change in total energy of the piston, how much work has been done, in j?
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