A 10-gram wire that is 6.0 m long is under tension.When a transverse wave of frequency 280 Hz travels along the wire,its wavelength is 0.60 m,and its amplitude is 8.4 mm.How much time does it take for a crest of the transverse wave to travel the length of the wire?
A)36 ms
B)31 ms
C)40 ms
D)44 ms
E)49 ms

Question

Quizplus · Accepted Answer

The speed of the wave is given by v = f*lambda, where f is the frequency and lambda is the wavelength. So, v = 280 Hz * 0.60 m = 168 m/s. The time it takes for a crest of the wave to travel the length of the wire is given by t = L/v, where L is the length of the wire. So, t = 6.0 m / 168 m/s = 0.036 s = 36 ms.

A 10-Gram Wire That Is 6