How Does the Doppler Effect Alter the Sound of a Horn from a Moving Truck?

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SUMMARY

The discussion centers on the application of the Doppler Effect to determine the perceived frequency of a horn from a truck traveling at 70.0 kph away from an observer. The horn emits a sound frequency of 400 Hz, and the air temperature is 25 degrees Celsius. Participants recommend starting with the Doppler shift equation, identifying known and unknown variables to facilitate solving the problem. The lack of initial attempts at a solution indicates a need for foundational understanding of the Doppler Effect and its mathematical application.

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Moroni
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Homework Statement


A truck is traveling 70.0 kph away from you. The Driver is blowing a horn with a frequency of 400 Hz, air temperature is 25 degrees celsius.:rolleyes:


Homework Equations



doppler effect


The Attempt at a Solution


none
 
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Moroni said:

The Attempt at a Solution


none

This makes it hard to want to help.

I would suggest you start with the Doppler shift equation and classify the variables involved by unknown and known, then you can think about the physics if you have more unknowns than you can solve for mathematically.
 
Sorry I should clarify. I said none because I can't even figure out how to use the equations I've been given.
 

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