What does the frequency the horns emit

Reference no: EM13341660

Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward the first at 20 m/s, the driver at rest hears a beat frequency of 5.5 Hz.

What does the frequency the horns emit? Assume T = 20 degrees C.

Reference no: EM13341660

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