Conceptual Physics (12th Edition)

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

Chapter 22 - Think and Solve: 39

Answer

The electric force is about a quadrillion times larger than the gravitational force.

Work Step by Step

$$F_{grav} = mg = (9.1 \times 10^{–31}kg)(9.8 \frac{m}{s^2}) = 8.9 \times 10^{–30} N$$ $$F_{elec} = qE = (1.6 \times 10^{–19} C)(10,000 \frac{V}{m}) = 1.6 \times 10^{–15} N$$
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