Answer
$f=1.47Hz$
Work Step by Step
We know that frequency is the reciprocal of time period, so $f=\frac{1}{T}$
Put the value of $'T'$ from part 'a'
$f=\frac{1}{0.680}$
$f=1.47Hz$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 16 - Waves-I - Problems - Page 472: 5b
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