the velocity of sound apparatus is used in an investigation to determine the frequency of an unknown tuning fork. The temperature of the room is 25° Celsius, the first antinode is at .75meters with the second position at 2.25.
The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength.
