(a)[3]
Explain how waves from the loudspeaker give rise to stationary waves in the tube.
(b(i)1)[1]
Describe the motion of the air particles in the tube at point P.
(b(i)2)[1]
Describe the motion of the air particles in the tube at point S.
(b(ii))[3]
Calculate the length of the tube, given that the speed of sound in the tube is $330\,\text{m s}^{-1}$ and the frequency of the waves from the loudspeaker is $880\,\text{Hz}$.