Physics: Principles with Applications (7th Edition)

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

Chapter 16 - Electric Charge and Electric Field - Problems - Page 469: 4


14 N

Work Step by Step

Use Coulomb’s law to calculate the magnitude of the force. $$F=k\frac{Q_1Q_2}{r^2}$$ $$=(8.99\times10^9\frac{N\cdot m^2}{C^2})\frac{(1.60\times10^{-19}C)^2}{(4.0\times10^{-15}m)^2}$$ $$=14N$$
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