(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Given: angular frequency=2000pi

phase velocity=320m/s

period=? unknown

2. Relevant equations

f=w/2pi; w=omega. T=1/f. phase velocity = lambda/T

3. The attempt at a solution

i don't know what the sgnificance of the phase velocity is. this is because from 1/T = w/2pi, i can already compute the T=2pi/w or 1x10^-3. unfortunately, it s not in the choices. can someone help? thanks!

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# Angular frequency, phase velocity, and period

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