(a(i))[2]
On Fig. 6.1, put the letter X beside the marked distance that shows the amplitude of the wave, and put the letter Y beside the marked distance that shows the wavelength of the wave.
(a(ii))[2]
State what happens to the wave’s amplitude and wavelength when the sound is made louder at constant pitch, and when the pitch is raised at constant loudness.
(b)[3]
Calculate the depth of the sea beneath the ship.