Waves in a Tube

  • #1

Homework Statement



A tube closed at one end and open at the other has a fundamental frequency of 242 Hz. What is the fundamental whenboth are open?

Homework Equations



f (open and closed) = v/4L
f (open) = v/2L
v sound = 343 m/s

The Attempt at a Solution



f1 (open and closed) = v/4L = 242Hz = 343/4L

L = .354 m

f (open) = v /2L = 343/ 2(.354m) = 484 Hz

Does this look OK?
 

Answers and Replies

  • #2
Doc Al
Mentor
45,011
1,288
Looks good.
 
  • #3
Great. Thanks for looking!
 

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