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A train is approaching a signal tower at a speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and a switchman in the tower responds by sounding the 1200 Hz siren. The air is still and the speed of sound is 340 m/s. What is the frequency of the train whistle tone, heard by the switchman? What is the frequency of the tower siren tone, heard by the engineer?

A train is approaching a signal tower at a speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and a switchman in the tower responds by sounding the 1200 Hz siren. The air is still and the speed of sound is 340 m/s. What is the frequency of the train whistle tone, heard by the switchman? What is the frequency of the tower siren tone, heard by the engineer?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A train is approaching a signal tower at a speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and a switchman in the tower responds by sounding the 1200 Hz siren. The air is still and the speed of sound is 340 m/s. What is the frequency of the train whistle tone, heard by the switchman? What is the frequency of the tower siren tone, heard by the engineer?
Transcribed Image Text:A train is approaching a signal tower at a speed of 40 m/s. The train engineer sounds the 1000 Hz whistle and a switchman in the tower responds by sounding the 1200 Hz siren. The air is still and the speed of sound is 340 m/s. What is the frequency of the train whistle tone, heard by the switchman? What is the frequency of the tower siren tone, heard by the engineer?
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