Practice question · Estimate
A source emits sound at and moves toward a stationary observer at . Taking the speed of sound as , the observed frequency is approximately ___ Hz. Set the slider to your answer.
Estimate on a scale from 0 to 2000.
Hints
- An approaching source crowds the wavefronts, so the pitch rises.
- The source speed is subtracted in the denominator, not added.
Show the answer
555.6 (answers within ±20 count)
Why
Hz.
Practise Sound Waves and the Doppler Effect
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