Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 8 - Exercises and Problems - Page 143: 72

Answer

b. 8 hours

Work Step by Step

We use the equation for period to find: $T=\sqrt{\frac{4\pi^2r^3}{GM_E}}$ $T=\sqrt{\frac{4\pi^2(20,200\times10^3)^3}{(6.67\times10^{-11})(5.97\times10^{24})}}\approx \fbox{8 hours}$
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