Suppose that the speed of sound in air is m/s. The graph below shows the pressure of the sound wave as a function of time for a certain sound wave at a given position
.

a) What is the frequency, f, of the sound wave in Hertz?

f = Hz

b) What is the wavelength, l, of the sound wave in meters? (If your browser does not show the Greek letter, lambda, click here for web information.)

l = m

The graph below shows the pressure as a function of distance for another sound wave, also travelling at xxx m/s, at a given time.

c) What is the wavelength, l, of the sound wave in meters?

l = m

d) What is the frequency, f, of the sound wave in Hertz?

f = Hz