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August 21, 2014

Homework Help: Physics!!

Posted by sophie on Saturday, April 4, 2009 at 8:00pm.

A car moving at 16.0 m/s, passes an observer while its horn is pressed. Find the difference between the frequencies of sound heard when the car approaches and when it recedes from the stationary observer. The velocity of sound is 343 m/s and the frequency of the sound of the car's horn is 583 Hz.
A. 42.2 Hz
B. 54.5 Hz
C. 61.8 Hz
D. 65.4 Hz

I used the Dopler effect formula and got B?

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