Problem 1 English Version

 Given the speed of sound is 345 m/sec in air at ~20C, 1 atm, and an organ pipe which is open at both ends.  In the following calculations, ignore pipe width corrections for coupling of the sound from the pipe to the open air.

• a/ What should the length of the pipe be to sound A(440 cycles per second)
• b/ What are the frequencies of the next two harmonics
• c/ What would happen to the frequency if you replaced the air (primarily nitrogen) with helium?
• d/ Can you name the note (on the even tempered scale?) corresponding to the new frequency?