- #1

rockerdude1210

- 20

- 0

## Homework Statement

[/B]

A student uses an audio oscillator of adjustable frequency to measure the depth of a dried up well. Two successive resonances are heard at 17.0Hz and 23.8Hz. The speed of sound in air is 343 m/s. How deep is the well?

## Homework Equations

f=nv/4L

## The Attempt at a Solution

[/B]

I solved the problem and the answer was 25.22m. However, I got this answer by using the equation for a tube open at both ends. I was confused because I thought that the correct equation would have been the one for a tube open at one end and closed at the other. Can someone explain why f=nv/2L was used instead of f=nv/4L

Last edited by a moderator: