Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 20 - Magnetism - Problems - Page 584: 11

Answer

0.24 T

Work Step by Step

This is discussed in example 20-6. The magnetic force causes circular motion. The alpha particle moves in a clockwise circular path. The radius of the motion is calculated in the book’s example. $$r=\frac{mv}{qB}$$ $$B=\frac{mv}{qr}$$ $$=\frac{(6.6\times10^{-27}kg)( 1.6\times10^6m/s)}{ 2(1.60\times10^{-19}C) (0.14m)}$$ $$=0.24T$$
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