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## Homework Statement

Hi, i have a problem that I'm trying to figure out:

An open ended tube has a resonant frequency of 261.6Hz, and the speed of sound is 343m/s. What is the tubes' length?

## Homework Equations

v=(f)(λ)

v=(f)(λ/2)

## The Attempt at a Solution

calculating with the equation v=(f)(λ)

v/f=λ

(343m/s)/(261.6hz)=λ

λ=1.3m

But the answer is half of that, (0.65m), why is this? Doesn't calculating the wavelength from the resonant frequency calculate the 'Half' Wavelength? equation: v=(f)(λ/2)

Thanks for all of your help!