Answer
$p=qBr$
Work Step by Step
See Example 20-6. The magnetic force is the centripetal force.
$$qvB=m\frac{v^2}{r}$$
Cancel out a factor of v.
$$qB=\frac{mv}{r}$$
The momentum p is mv.
$$qB=\frac{p}{r}$$
$$p=qBr$$
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 20 - Magnetism - General Problems - Page 587: 68
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