Conceptual Physics (12th Edition)

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

Chapter 14 - Reading Check Questions (Comprehension): 27

Answer

The fluid is pushed up the inside tube by air pressure on its surface.

Work Step by Step

This is discussed on page 275, and Figure 14.22. A similar idea is illustrated on page 268, Figure 14.8 when the operation of a drinking straw is discussed.
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