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College Physics (Urone)
Found in: Page 502
College Physics (Urone)

College Physics (Urone)

Book edition 1st Edition
Author(s) Paul Peter Urone
Pages 1272 pages
ISBN 9781938168000

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Short Answer

When watching a daytime circus in a large, dark-coloured tent, you sense significant heat transfer from the tent. Explain why this occurs.

During the day, the sun's radiation will heat the tent, and you will receive heat from the tent via convection.

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Step by Step Solution

TABLE OF CONTENTS :
TABLE OF CONTENTS

Step 1: Explain how the tent attains heat.

During the daytime, sunlight emits light energy. This energy is absorbed by the tent. Since it has a dark color, it will absorb light from most of the wavelengths, while the light colors cannot absorb light from all wavelengths and will emit light. This light energy absorbed by the tent is transferred into heat energy and the tent becomes hot.

Step 2: Explain how you will sense heat while sitting under the tent.

The tent gets hot from the sunlight through radiation. The heat from the tent is transferred through the air. This process is called convection. So, through convection, heat will reach you and you will experience heat.

Thus, you will experience heat while sitting under a dark-colored tent through radiation and convection.

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Find the net rate of heat transfer by radiation from a skier standing in the shade, given the following. She is completely clothed in white (head to foot, including a ski mask), the clothes have an emissivity of 0.200 and a surface temperature of 10.0ºC , the surroundings are at −15.0ºC , and her surface area is \({\bf{1}}{\bf{.60}}\;{{\bf{m}}^{\bf{2}}}\).

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