Conceptual Physics (12th Edition)

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

Chapter 19 - Think and Discuss: 90


The speed of sound in air is much larger than the effective speed at which molecules diffuse through air.

Work Step by Step

That explains why the sound of gas escaping from a tap can be heard long before the gas molecules migrate over to the listener.
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