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Homework Help: Estimate the fundamental frequency of resonance sound induced by blowi

  1. Apr 21, 2013 #1
    1. The problem statement, all variables and given/known data

    Estimate the fundamental frequency of resonance sound induced by blowing on the open end of a half liter bottle

    2. Relevant equations

    f= 1c/4L

    3. The attempt at a solution

    i don't know the length of L,
    what's half liter bottle ..? What does it tell you? 2 x f1?
     
  2. jcsd
  3. Apr 21, 2013 #2
    A half liter bottle? That is the volume of the container, but I don't know any geometric equations for a "bottle", only objects that approximate a bottle, like a cylinder, but you cannot calculate the "L" of the bottle without the radius or diameter of the object.

    150px-Bouteille.jpg
    Cylinderr.gif

    0.5 = pi*r^2*L

    Not sure there is enough available data to calculate the fundamental frequency.
     
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