(a(i))[1]
State which letter P, Q, R, S or T on Fig. 6.1 shows the wavelength of the water wave.
(a(ii))[1]
State which letter P, Q, R, S or T on Fig. 6.1 shows the amplitude of the water wave.
(a(iii))[1]
State what the term frequency of a wave means.
(b)[4]
Describe how the students use the setup in Fig. 6.2 to find the speed of sound in air.