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Shock wave front

  • Thread starter tina21
  • Start date
8
2
Homework Statement
When a vibrating source moves through a medium with speed V, speed of propagation of wave is v. A conical wavefront is set up independent of time. What happens when the source is not vibrating?
Homework Equations
Sin(theta) = v/V
So when the source is not vibrating, it is not setting waves due to vibration? But it is moving so it is still causing disturbance in the medium .... And I happened to read that if the source is moving faster than the speed of sound, a shock wave is set up. How ?
 
7
2
Read about Doppler's effect; the shock wave is there because the source is always ahead of the sound wave it creates; behind the source, there will be a region where waves superimpose; sketch the moving plane, sketch few wave fronts and you will see how they combine. Look up Sonic Bum.
 
8
2
I understand now. Thank you so much :smile:
 

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