A friend of yours is loudly singing a single note at 402 Hz while racing toward you at 24.4 m/s on a day when the speed of sound

Question

A friend of yours is loudly singing a single note at 402 Hz while racing toward you at 24.4 m/s on a day when the speed of sound is 340 m/s.
What frequency do you hear?
What frequency does your friend hear if you suddenly start singing at 402 Hz ?

Kunduz · Accepted Answer

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