(a(i))[1]
On Fig. 5.1, place the letter C at the centre of a compression, and place the letter R at the centre of a rarefaction.
(a(ii))[1]
Describe how a compression differs from a rarefaction.
(b(i))[1]
The wooden bar completes $45$ full oscillations in $1.0$ minute. Calculate the frequency of the wave that is produced.
(b(ii))[2]
The frequency of the water wave is increased by moving the wooden bar up and down more rapidly. State what happens to the speed and what happens to the wavelength of the wave that is produced.
(b(iii))[2]
On Fig. 5.2, draw the crests in the shallow region.
(c)[1]
Describe what is meant by diffraction of a water wave.