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2.
In still air, with a speed of sound, v=340.0 m /s, you are driving directly toward a flat
cliff facing the direction of travel. The flat cliff reflects the sound of your horn which emits at
f = 512.0Hz . You hear the reflected sound of your horn and the frequency is fr = 623.3Hz .
A
What is the speed of your car, v, in km / h?
A

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