1. Not finding help here? Sign up for a free 30min 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!

Open and closed pipe (Help)

  1. Jul 31, 2008 #1
    1. The problem statement, all variables and given/known data

    a pipe in air at 20 degrees celsius ia to be designed to produce two succesive harmonics at 240Hz & 280Hz. how long must the pipe be, and is it open or closed?

    2. Relevant equations

    v=[tex]\lambda[/tex]f


    3. The attempt at a solution

    sorry, i could not do it. i totally cant do it.
     
  2. jcsd
  3. Aug 1, 2008 #2

    Hootenanny

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Can you start by telling me what a harmonic is?
     
  4. Aug 2, 2008 #3
    harmonics are frequencies of a wave which consits the fundemental frequency.

    the formula for fundemental harmonic is

    fn
    = v[tex]/[/tex][tex]\lambda[/tex]n
    = n (v[tex]/[/tex]2L)
    = nf0
     
  5. Aug 2, 2008 #4

    Hootenanny

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Correct.
    That equation is only valid for tubes with open ends, what about tubes with closed ends?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Open and closed pipe (Help)
  1. Open and Closed pipes (Replies: 1)

  2. Open and closed pipes (Replies: 1)

  3. Open and Closed Pipes (Replies: 1)

  4. Open and closed pipe (Replies: 3)

Loading...