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Engineering · Mechanical Engineering
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Matter & Energy Classwork 1. A spherical balloon has a diameter of 5m. The air trapped inside has a specific volume of 0.84 m/kg. Determine the weight of the air inside the balloon assuming the acceleration of gravity is 9.8 m/s2 A manometer filled with water is used to measure the pressure of a gas in a tank. The water (ρ-1000 kg/m2) is displaced by a height of 60 centimeter. What is the gage pressure of the gas in the tank? What is the absolute pressure? 2. 3, A vertical piston-cylinder device (D = 30 cm) contains a trapped mixture of gases. compresses the gas mixture from 4 m3 down to 1m2. How much work is done by the piston on the gas mixture? The piston (m·0.5 kg) falls and 4. A piston cylinder containing a gas is compressed. The work done by the system during expansion is 100 k and the change in energy of the system is 200 kJ. Find the magnitude and direction of any heat transfer associated with this process
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