- #1

physgirl

- 99

- 0

so I tried using the equation:

f' = [(1+vo/v)/(1+vs/v)]f

(both pluses taking into account the direction of both the observer and the source)

where:

f'=frequency heard=132 Hz

f=actual frequency=125 Hz

vo=velocity of observer=unknown

vs=velocity of source=28 m/s

v=343 m/s

so I plugged in the numbers and got 48.78 m/s. The website won't take this as the answer and I'm completely clueless as to what I did wrong... any help?