Calculate the mass of air in the balloon, Mechanical Engineering

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Calculate the mass of air in the balloon

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Q: Air in a tank is at 1 MPa and room temperature of 20°C. It is used to fill an initially empty balloon to a pressure of 200 kPa, at which point the radius is 2 m and the temperature is 20°C. Assume the pressure in the balloon is linearly proportional to its radius and that the air in the tank also remains at 20°C throughout the process. Find the mass of air in the balloon and the minimum required volume of the tank

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Mechanical Engineering: Calculate the mass of air in the balloon

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