Question

An airplane traveling at half the speed of sound emits a sound of frequency 5.25 kHz....

An airplane traveling at half the speed of sound emits a sound of frequency 5.25 kHz.

(a) At what frequency does a stationary listener hear the sound as the plane approaches?
kHz

(b) At what frequency does a stationary listener hear the sound after the plane passes?
kHz

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Answer #1

is taken as positive when source is moving towards the object. Similarly is taken as negative when source moves away from observer.

Similarly is taken as positive when object is moving towards the source. Similarly is taken as negative when object moves away from source.

a)

b)

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