An airplane traveling at v = 147 m/s emits a sound of frequency 5.60 kHz. At what frequency does a stationary listener hear the sound during each of the following times? (Use 344 m/s as the speed of sound.)
(a) as the plane approaches

(b) after it passes

Question

An airplane traveling at v = 147 m/s emits a sound of frequency 5.60 kHz. At what frequency does a stationary listener hear the sound during each of the following times? (Use 344 m/s as the speed of sound.)
(a) as the plane approaches

(b) after it passes

anonymous · Answer

"$$f=\left( v+vr/v+vs \right)f0$$" http://en.wikipedia.org/wiki/Doppler_effect

anonymous · Answer

for problems regardin Doppler's Efffect..there's a general formula...that is..
f(apparent)={(relative velocity of sound w.r.t observer)/(relative velocity of sound w.r.t source)}*f(actualy)

anonymous · Answer

for (a)..F=334/(334-147) times 5.6