18. Waves & Sound
The Doppler Effect
18. Waves & Sound The Doppler Effect
8PRACTICE PROBLEM
A whistle (supplied by a stream of air) emitting sound at 3.0 kHz is fixed to a 1.6 m from the axis of a rotating blade. The blade spins in a horizontal circle at 360 rpm. If the sound undergoes the Doppler effect, work out the greatest and least frequencies detected by an observer.
A whistle (supplied by a stream of air) emitting sound at 3.0 kHz is fixed to a 1.6 m from the axis of a rotating blade. The blade spins in a horizontal circle at 360 rpm. If the sound undergoes the Doppler effect, work out the greatest and least frequencies detected by an observer.