- #1

slaw155

- 41

- 0

I went frequency = frequency of source x (velocity of wave+velocity of bat)/(velocity of wave)

So 40 = f x (340+4)/(340).

This however gives me the wrong answer of 40.4kHz compared to the textbook answer of frequency = 41kHz. Using any doppler formula rearrangement doesn't lead me to 41kHz, so what have I done wrong?