Physics, 25.03.2021 01:30 stranger123

You are driving on the highway at 40 m/s with another car driving to you at exactly the same speed. when you honk your horn (with a frequency of 315 Hz), what frequency of the sound will the driver of other car perceive. A. 475 hz
B. 235 Hz
C. 315 Hz
D. 7.8 Hz

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