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An elastic sphere of 0.5-m diameter contains a gas at 115 kPa. Heating of the sphere causes it to increase to 0.62 m, and during

An elastic sphere of 0.5-m diameter contains a gas at 115 kPa. Heating of the sphere causes it to increase to 0.62 m, and during this process the pressure is proportional to the sphere diameter. Determine the work done by the gas.

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