n one of the original Doppler experiments a tuba on a moving train played a note while a second tuba at rest at atrain station played the identical note.   a) if the train is moving toward the station at the speed of 10 m/s and thhe moving tuba is playing middle C (fs=262 Hz) what frequency do the people at the station hear? Use v=340m/s for the speed of sound   b) What is the reesulting beat frequency heard at the station when both tubas are playing middle C and the train is approaching at 10 m/s?   c) A person half way between the moving and stationary tuba also hears the beat frequency. Which way does the person have to run so that they hear no beats? Towards the station or towards the moving train? Why? How fast did the person have to run? Why?

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In one of the original Doppler experiments a tuba on a moving train played a note while a second tuba at rest at atrain station played the identical note.

 

a) if the train is moving toward the station at the speed of 10 m/s and thhe moving tuba is playing middle C (fs=262 Hz) what frequency do the people at the station hear? Use v=340m/s for the speed of sound

 

b) What is the reesulting beat frequency heard at the station when both tubas are playing middle C and the train is approaching at 10 m/s?

 

c) A person half way between the moving and stationary tuba also hears the beat frequency. Which way does the person have to run so that they hear no beats? Towards the station or towards the moving train? Why? How fast did the person have to run? Why?

 
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