Hot air rises because it has expanded. It then displaces a greater volume of cold air, which

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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 50.0°C air surrounded by 20.0°C air.

(b) What energy is needed to cause 1.00 m³ of air to go from 20.0°C to 50.0°C?

(c) What gravitational potential energy is gained by this volume of air if it rises 1.00 m³? Will this cause a significant cooling of the air?

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College Physics

ISBN: 9781711470832

2nd Edition

Authors: OpenStax

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Question Posted: Nov 19, 2023 12:28 AM

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Hot air rises because it has expanded. It then displaces a greater volume of cold air, which

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a 1102 b 279 x 10 4 J c 126 J This will ...View the full answer

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