Applying the properties of longitudinal waves Calculate the frequency of a longitudinal sound wave of wavelength 0,5 m
that travels through steel at a speed of 5 060 m-s!
2 A cello string vibrates with a frequency of 64 Hz. If the wavelength of the
waves in the string is 180 cm, calculate the wave speed.
3 Explain why it is impossible for sound to travel through a vacuum.
4 Calculate the wavelength of the sound waves that are produced by a tuning
fork marked C-264 Hz. Take the speed of sound in air as 343 ms.
5 A boy stands between two tall buildings. When he claps his hands, he hears
the echo from one building after 2 s and the next echo from the other
building after 3 s. Calculate the distance between the buildings. Take the
speed of sound in air as 343 ms
6 The audible range is between 20 Hz and 20 kHz.
a) If the velocity of sound in air is 343 m s', calculate the wavelength of the
highest and lowest notes.
b) Determine how many of each wavelength that you calculated in a)
would fit into a room 4 m long.​