Homework # 5 Problem 16.77 8 of 8 Review | Constants Part B A physics professor demonstrates the Doppler What is the difference between the lowest frequency heard by a student in the classroom and theinitial frequency of the effect by tying a 650 Hz sound generator to a sound generator? 1.0-m-long rope and whirling it around her head in a horizontal circle at 100 rpm. Express your answer with the appropriate units. DO E ? f- - fo = Value Units Submit Request