P17_036.PDF

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Chapter 17 - 17.36
36. (a) The wave speed is given by
v = τ
µ =
7 . 00 N
2 . 00
×
10 − 3 kg / 1 . 25m
=66 . 1m / s .
(b) The wavelength ofthe wave with the lowest resonant frequency f 1 is λ 1 =2 L, where L = 125 cm .
Thus,
v
λ 1
66 . 1m / s
2(1 . 25 m)
f 1 =
=
=26 . 4Hz .
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