1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Resonant Lengths in open and closed colums

  1. Jan 28, 2007 #1
    Is there a pattern for resosnant length for closed and open air coloums. Does this apply to instruments.
  2. jcsd
  3. Jan 28, 2007 #2

    Chi Meson

    User Avatar
    Science Advisor
    Homework Helper

    Yes and yes.

    Your question is too vague to offer any more information.
  4. Jan 28, 2007 #3
    What is the pattern

    can u tell me the pattern
  5. Nov 29, 2007 #4
    For a closed-ended column it's:

    Ln = (2n-1)Vf

    For an open-ended column it's:

    Ln = nv

    Ln: which resonant length your finding.
    n: the number corresponding to which resonant length is being found
    v: theoretical speed of sound in the particular medium you are using. in air, you can find this with the formula: v = 331.3 + 0.606*(temperature in degrees celcius)
    f: frequency of the soundwave in the column.

    Hope this helps :smile:
  6. Nov 29, 2007 #5
    Sorry, the "4" and the "2f" are the denominators of the equations
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook