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Problem 18.8: In which of the animation(s) does the source travel slower than sound?

Please wait for the animation to completely load.

The animation represents a cross section of a three-dimensional sound wave propagating away from a moving source (time is given in seconds). Restart.

  1. In which of the animation(s) does the source travel slower than the speed of sound?
  2. In which of the animation(s) does the resulting sound wave travel the fastest?
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