Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 18 - Think and Explain: 52

Answer

When the sealed gallon can is heated, the gas pressure inside increases. When the can is cooled, the pressure inside decreases.

Work Step by Step

When the can is heated, the hotter, faster-moving gas molecules hit the inside of the can more frequently and with greater force, exerting greater pressure. When the can is cooled, they hit less frequently (and less violently), exerting less pressure.
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