An airplane traveling at half the speed of sound emits a sound of frequency 5.32

Question

An airplane traveling at half the speed of sound emits a sound of frequency 5.32 kHz.

An airplane traveling at half the speed of sound emits a sound of frequency 5.32 kHz. At what frequency does a stationary listener hear the sound as the plane approaches? Your response differs from the correct answer by more than 10%. Double check your calculations. kHz At what frequency does a stationary listener hear the sound after the plane passes? Your response differs from the correct answer by more than 10%. Double check your calculations. kHz

Explanation / Answer

f' = f (v)/(v-vs)

= 5.32 x 10^3 * (343.2)/(343.2 -343.2/2) = 10.6 Khz

b)

f' = f (v)/(v+vs)

= 5.32 x 10^3 * (343.2)/(343.2 + 343.2/2) = 3.546 Khz

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