F = (Vs+Vo)/(Vs-Vh) * Fh.
F = (343+0)/(343-30) * 500 =
Vs = velocity of sound.
Vo = velocity of the observer.
Vh = velocity of the horn.
If a car whose horn emits a frequency of 500 Hz is driving toward you at 30 m/s, which frequency might be the one that you hear?
3 answers
550hz
550 hz