A snapshot of surface waves in a ripple tank is enlarged on a computer screen. The horizontal positions of three successive crests are measured as 0.12 m, 0.44 m and 0.76 m. The same wave is observed to travel across the tank with a speed of 16 m s−1.
(i) Determine the wavelength of the wave from the spatial data.
(ii) Using the given speed, calculate the frequency of the wave.
(iii) Find the period of oscillation of a water particle at a fixed point on the surface.