A,,,gas,,,,,is confined,,,in,,,,,,,,a cylinder,,,by,,,,a,,,,piston,,,,,5cm in diameter, onwhich rests a weight. The piston and weight together has a mass of 3.6 kg. The local acceleration of gravity is9.7m/s2. Assume standard atmosphericpressure.   a.     What is the force (N) exerted on the gas by the atmosphere, the piston and the weight? b.     What is the pressure (kPa) of the gas? c.     If the gas in the cylinder is heated, it expands and pushes the piston and weight upward. Assume that enough heat is supplied to raise piston and weight to 20 cm. Calculate the work [J] done by the gas in expansion

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