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Figure 6I shows the cross- section of a ripple tank full of water. A piece of cork floats on the surface of the water as shown. Figure 6II shows the water surface viewed from above. A straight edge vibrator placed at the end A of ripple tank generates water waves, which travel towards end B as shown.
(i) Identify the type of waves generated on the water surface.
(ii) It is observed that as the waves pass the cork, there is no net movement on the cork. Explain this observation.
(iii) A student estimates that successive waves pass the cork 0.20 seconds. If the speed of the waves is 0.30#ms^-1# , determine the frequency and wavelength of the waves at that point.
(iv) In the space provided, sketch the wave fronts as viewed from a point above the ripple tank.
(v) Explain the answer in part (iv) above.