An organ pipe open at both ends has a radius of 6.0cm and a length of 4.0m. If the temperature is 20C, what is the fundamental frequency of the organ pipe?
2007-12-08 05:31:00 · 2 answers · asked by limeinelcoconut 1 in Science & Mathematics ➔ Physics
In air at sea level, the speed of sound is approximately 343 m/s at 20 °C. For this organ pipe open at both ends, a length of 4.0m fits a half wavelength of the fundamental. Hence the fundamental frequency of the organ pipe is:
(343 m/s) /(8m) = 43 Hz
2007-12-11 12:50:56 · answer #1 · answered by Hahaha 7 · 0⤊ 0⤋
Take a look at:
http://www.physicsclassroom.com/Class/sound/U11L5c.html
http://www.phys.unsw.edu.au/jw/flutes.v.clarinets.html
http://en.wikipedia.org/wiki/Stopped_pipe
All three give answers. The first two are first-order approximations. Wikipedia gives a better approximation.
(As a general rule, wikipedia is your friend.)
2007-12-11 22:26:56 · answer #2 · answered by simplicitus 7 · 0⤊ 0⤋