A pistom cylinder with a cross-sectional area of 0.02 m has a piston mass of 120 kg

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Question:

A pistom cylinder with a cross-sectional area of 0.02 m² has a piston mass of 120 kg resting on the stops, figure as shown. With an outside atmospheric pressure of 101 kPa, what should the water pressure be lift the piston?the temperature of water in the system is 16°C. If the absolute value of this temperature is doubled and decreased by 239 degrees, what would be the final temperature in k, °F and R?