Calculating Car Speed from Horn Frequency

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SUMMARY

The discussion centers on calculating the speed of a car based on the frequency of its horn using the Doppler effect. The observed frequency is 503.7 Hz, while the horn's frequency is 450 Hz, with the speed of sound given as 1100 ft/sec. Participants emphasize the need to apply the Doppler effect equations to derive the car's speed accurately. The conversation highlights the importance of understanding the relationship between frequency, wavelength, and sound wave velocity.

PREREQUISITES
  • Understanding of the Doppler effect and its equations
  • Knowledge of sound wave properties, including frequency and wavelength
  • Basic algebra for solving equations
  • Familiarity with physics concepts related to wave motion
NEXT STEPS
  • Study the Doppler effect equations in detail
  • Learn how to calculate speed using frequency shifts
  • Explore sound wave properties and their mathematical relationships
  • Review examples of real-world applications of the Doppler effect
USEFUL FOR

Students in physics, educators teaching wave motion concepts, and anyone interested in applying the Doppler effect to real-world scenarios.

Moroni
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Homework Statement



A car approaches blowing its horn. The observed frequency is 503.7 Hz Assume that the speed of sound is 1100 ft/sec. the car's horn has a frequency of 450 Hz How fast is the car traveling.




Homework Equations


?



The Attempt at a Solution



I can't even figure out how to start. Sorry for my ignorance.
 
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Thread moved from Advanced to Intro Physics.

Try again to list the relevant equations. What equation relates the frequency, wavelength and velocity of sould waves? What equations are you shown in your text or other learning materials for the Doppler effect? What does the wikipedia.org page say about the Doppler effect?
 
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Is this it?

Thank You!
 

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