University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 44 - Particle Physics and Cosmology - Problems - Discussion Questions - Page 1519: Q44.4


See explanation.

Work Step by Step

The gravitational force between large objects such as the Earth and the moon was noticed relatively early because their masses are large enough that the force was/is apparent. The force is always attractive. On the other hand, objects are generally neutral, so the electrostatic forces sometimes attract and sometimes repel, are less apparent, and are harder to measure.
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