Answer
$v=144\frac{m}{s}$
Work Step by Step
We can find the waves speed as
$v=\sqrt\frac{T}{\mu}$
We plug in the known values to obtain:
$v=\sqrt\frac{120}{\frac{8.7\times 10^{-3}}{1.5}}=144\frac{m}{s}$
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 477: 79a
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