Question: A physics professor demonstrates the Doppler effect by tying a 5 7 0 Hz sound generator to a 1 . 0 - m - long

A physics professor demonstrates the Doppler effect by tying a 570 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 120 rpm . Assume the room temperature is 20C.What is the highest frequency heard by a student in the classroom?
Express your answer in hertz.
What is the lowest frequency heard by a student in the classroom?

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