Integrated Concepts Hot air rises because it has expanded. It then displaces a greater
Chapter 14, Problem 75(choose chapter or problem)
Integrated Concepts Hot air rises because it has expanded. It then displaces a greater volume of cold air, which increases the buoyant force on it. (a) Calculate the ratio of the buoyant force to the weight of 50.0C air surrounded by 20.0C air. (b) What energy is needed to cause 1.00 m3 of air to go from 20.0C to 50.0C ? (c) What gravitational potential energy is gained by this volume of air if it rises 1.00 m? Will this cause a significant cooling of the air?
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