Agas is contained in a gas piston-cylinder assembly. the piston mass and crosssectional area are denoted as m and a, respectively. the only force acting on top of the piston is due to atmospheric pressure, patm. assume the piston moves smoothly in the cylinder and the local acceleration of gravity g is constant. - show that the pressure of the gas acting on the bottom of the piston remains constant as gas volume varies. - what would cause the gas volume to vary?

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i believe the answer is a hope it and is correct