Calculating Length of Pipe Open at Both Ends

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SUMMARY

The discussion focuses on calculating the length of a pipe organ pipe open at both ends, producing a 440 Hz signal at an ideal temperature of 20 degrees Celsius. The velocity of sound at this temperature is approximately 332 m/s. To find the length of the pipe for the first harmonic, the wavelength is determined using the formula v = f * wavelength, where the wavelength for the first harmonic is twice the length of the pipe. Thus, the length of the pipe can be calculated as length = wavelength / 2.

PREREQUISITES
  • Understanding of sound wave properties, specifically frequency and wavelength
  • Knowledge of the speed of sound in air at different temperatures
  • Familiarity with harmonic frequencies in open pipes
  • Basic algebra for rearranging equations
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  • Learn about the speed of sound in various mediums and temperatures
  • Study the concept of harmonics in musical instruments, particularly in open pipes
  • Explore the mathematical derivation of wave equations in acoustics
  • Investigate the effects of temperature and pressure on sound velocity
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Musicians, acoustics engineers, physics students, and anyone interested in the principles of sound production in musical instruments.

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Homework Statement



A pipe organ playing in a concert produces a 440 Hz signal with a pipe open at both ends.if the ideal temperature is 20degrees, what is the length of the pipe(first harmonic)

Homework Equations


f=N/T
f=1/T
v=f*wavelength
sound equation

The Attempt at a Solution



332ms*0.59*20
=332ms+0.118ms
=332.118ms
i don't know where to go from there
 
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You know the velocity of sound at 20 degrees C (at least I hope you have the right equation) and you know the frequency. Its simply a matter of rearranging this v=f*wavelength for wavelength.

Also remember that the first harmonic in an open pipe has a wavelength of twice the pipes length.
 

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