Question:
In a resonance column experiment, a tuning fork of frequency $400 \mathrm{~Hz}$ is used. The first resonance is observed when the air column has a length of $20.0 \mathrm{~cm}$ and the second resonance is observed when the air column has a length of $62.0 \mathrm{~cm}$.
(a) Find the speed of sound in air.
(b) How much distance above the open end does the pressure node form?
Solution:
