Conceptual Physics (12th Edition)

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

Chapter 11 - Think and Explain: 43

Answer

Brownian motion of a particle is caused by random jostling of atoms and molecules against the particle. Random fluctuations produce a time-varying net force on the particle. Brownian motion is not observed for a baseball because its mass is too large to be much affected by the imbalance of hits.

Work Step by Step

This is discussed on page 210.
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