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Closed pipe question

  • Thread starter pebbles
  • Start date
95
0
1. Homework Statement
Once closed organ pipe has a length of 3.2 m. Frequency of the note played by this pipe is 27 Hz. When a second pipe is played at the same time, a 1.50 Hz beat note is heard. By how much is the second pipe too long?


2. Homework Equations

???

3. The Attempt at a Solution

I'm really lost on this problem. I was thinking Lb-La=1/2 of wavelength, but I don't think that's right.

Any direction is appreciated. Thanks in advance.
 

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