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What is the mass of a single weight (assume one step work) you need to put on a bike pump to take the air in the pump from 1 atmosphere to 9 atmospheres? Assume the diameter of the piston of the bike pump is 3 cm (about an inch). (The SI unit of pressure is the Pascal, and is generally the most convenient unit of pressure when determining energy.) How much force does this mass generate? You can assume that the heat during compression leaves the gas and the temperature stays constant.

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