College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 9 - Solids and Fluids - Learning Path Questions and Exercises - Multiple Choice Questions - Page 346: 18

Answer

(b) surface tension

Work Step by Step

Bubbles are spherical because there is an attraction force called surface tension that pulls molecules of water into the tightest possible groupings. And the tightest possible grouping that any collection of particles can achieve is to pack together into a sphere.
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