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## Homework Statement

I understand how to find the resonant frequency of a closed pipe but when the thickness of the walls varies, the resonant frequency varies. Is there a formula that i can use to find the resonant frequency of a closed pipe given the length, temperature, speed of sound and THICKNESS. Thank you for any help :)

## Homework Equations

## The Attempt at a Solution

I attempted a few experiments in which i used a technique called over blowing but i also want to calculate it mathematically if possible.

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