Diameter and Fundamental Frequency

[mtreichl]

Homework Statement

Two open tubes both have actual length 1m but their diameters are D=1 cm and D=10 cm. Alowing fro end corrections, what are their fundamental frequencies?

Homework Equations

the only equation in my book that deals with Diamter is N(Critical Mode)=L(Length)/D(Diameter) I tried using this to find a mode to plug into f=nV/2L but that did not get me the right answer.

The Attempt at a Solution

 

[Spinnor]

http://www.fonema.se/mouthcorr/mouthcorr.htm

From,

http://www.google.com/search?um=1&h...w.,cf.osb&fp=dc20b2672385f007&biw=721&bih=426