What is meant by displacement and amplitude for a wave on the surface of water?
What is meant by frequency and time period for a wave on the surface of water?
Fig. 5.1 shows waves on the surface of water in a ripple tank at one instant. A vibrator causes the water surface to move and produces waves of frequency $f$. The wave speed is $7.5\,\text{cm s}^{-1}$. In the region where the waves travel across the water surface, the greatest water depth is $15\,\text{mm}$ and the smallest water depth is $12\,\text{mm}$. Calculate, for the waves, the amplitude.
Calculate, for the waves, the wavelength.
Calculate the time period of the oscillations of the vibrator.
State and explain whether the waves on the surface of the water shown in Fig. 5.1 are progressive or stationary.
State and explain whether the waves on the surface of the water shown in Fig. 5.1 are transverse or longitudinal.