Angular frequency, phase velocity, and period

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SUMMARY

The discussion focuses on calculating the period (T) from the given angular frequency (ω) of 2000π rad/s and phase velocity of 320 m/s. The key equation used is T = 2π/ω, leading to a calculated period of T = 1 x 10^-3 seconds. However, there is confusion regarding the significance of phase velocity and a discrepancy in the expected answer choices. The correct calculation for T should yield T = π x 10^3 seconds, indicating a misunderstanding in the application of the formula.

PREREQUISITES
  • Understanding of angular frequency (ω) and its units
  • Familiarity with the relationship between frequency (f) and period (T)
  • Knowledge of phase velocity and its relevance in wave mechanics
  • Ability to manipulate mathematical equations involving trigonometric functions
NEXT STEPS
  • Review the derivation of the relationship between angular frequency and period
  • Study the concept of phase velocity in wave mechanics
  • Explore the implications of phase velocity on wave propagation
  • Practice solving problems involving angular frequency and period calculations
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Students studying physics, particularly those focusing on wave mechanics, as well as educators seeking to clarify concepts related to angular frequency and period calculations.

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

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