How fast is your friend approaching you

Reference no: EM13270215

While sitting in your car by the side of a country road, you see your friend, who happens to have an identical car with an identical horn, approaching you. You blow your horn, which has a frequency of 260 Hz; your friend begins to blow his horn as well, and you hear a beat frequency of 6.0Hz.

How fast is your friend approaching you?

Reference no: EM13270215

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