Conceptual Physics (12th Edition)

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

Chapter 19 - Think and Explain: 63

Answer

$\frac{1}{60} Hz. \frac{1}{3600} Hz. \frac{1}{43200} Hz$.

Work Step by Step

Frequency is the reciprocal of the period. The second hand of a clock makes one complete cycle per minute. $f = \frac{1}{T} = \frac{1}{60 s}= \frac{1}{60} Hz $. The minute hand of a clock makes one complete cycle in one hour. There are 3600 seconds in an hour. $f = \frac{1}{T} = \frac{1}{3600 s}= \frac{1}{3600} Hz$. The hour hand of a clock makes one complete cycle in 12 hours. There are 43200 seconds in 12 hours. $f = \frac{1}{T} = \frac{1}{43200 s}= \frac{1}{43200} Hz $.
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