# Question: a When police radar waves bounce off an oncoming car

(a) When police radar waves bounce off an oncoming car and are received by the transmitting radar “gun,” they have a different frequency than the emitted waves. Explain.

(b) Is the frequency in part (b) higher or lower than the original frequency? What about wavelength? What about wave speed?

(b) Is the frequency in part (b) higher or lower than the original frequency? What about wavelength? What about wave speed?

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