A tuning fork mounted at the top of a water column is struck. As the water level is adjusted by raising or lowering the resevoir, the air column will resonate at certain lengths, each length is 1/2 a wavelength different from the next. By marking the resonating locations, the wavelength of the sound can be seen and measured. Then, by noting the frequency of the tuning fork, the speed of sound in the tube can be determined.
Questions:
What will happen to the wavelength in colder gas? (use a little liquid nitrogen).
What will happen to the wavelength of the sound in CO2? (Add vinegar to the water and drop in some baking soda.)
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