Conceptual Physics (12th Edition)

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

Chapter 14 - Think and Explain: 60

Answer

1.52 meters.

Work Step by Step

If the liquid in a barometer were a factor of X as dense as mercury, atmospheric pressure could support a column 1/X times as high as it could support a mercury column (which at sea level is 0.76 m). Therefore, a barometer using a liquid half as dense as mercury (X = 0.5) would be twice (1/X = 2) the height of a standard mercury barometer, or about 1.52 m. This is discussed on page 268.
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