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 - Questions: 12

Answer

Gravitational forces between everyday objects are too small to be noticeable. Electric forces in everyday objects are near neutral.

Work Step by Step

We don’t notice gravity between ordinary objects because the force is so weak, due to the small value of G and of ordinary masses. We do notice gravity when one or both of the masses are large, for example, when the Earth pulls us downward, or when the moon is attracted to the Earth and ends up circling it. We don’t notice electric forces between ordinary objects because most of them are very close to being electrically neutral. We do notice the electric force when things have a net charge (such as a balloon rubbed against one’s hair).
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