Angular frequency, phase velocity, and period

[jakey]

Homework Statement

Given: angular frequency=2000pi
phase velocity=320m/s
period=? unknown

Homework Equations

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

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!

 

[Ertosthnes]

The phase velocity isn't important. If you have angular velocity (w) then you can always find T using T = 2pi/w.

 

[wywong]

T=2pi/w or 1x10^-3. unfortunately, it s not in the choices. can someone help? thanks!

2pi/w should give piX10^03, not 1X10^-3.