Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 10 - Fluids - General Problems - Page 289: 78

Answer

0.32 N.

Work Step by Step

Use equation 10–3b to calculate the change in pressure. Multiply by the eardrum’s area to find the force on the eardrum. $$\Delta P = \rho g \Delta h$$ $$F = A \rho g \Delta h=(0.20\times10^{-4}\;m^2) (1.29\;kg/m^3) (9.80\;m/s^2) (1250\;m) =0.32\;N$$
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