If a sound with frequency f, is produced by a source traveling along a line with speed vg and an observer is traveling with speed v, along the same line from the opposite direction towardthe source, then the frequency of the sound heard by the observer isfo =where c is the speed of sound, about 332 m/s. (This is the Doppler effect.) Suppose that, at a particular moment, you are in a train traveling at 44 m/s and accelerating at 1.6 m/s2. Atrain is approaching you from the opposite direction on the other track at 48 m/s, accelerating at 1.9 m/s?, and sounds its whistle, which has a frequency of 428 Hz. At that instant, whatis the perceived frequency that you hear? (Round your answer to one decimal place.)HzHow fast is it changing? (Round your answer to two decimal places.)Hz/s

Solution : Here, you have to apply Doppler's effect to find the perceived frequency and the rate of…

Answered: If a sound with frequency f, is…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section: Chapter Questions

Problem 8PQ

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