An earthquake under ocean produces two ocean waves. The locations of the sources of the waves are marked with "Wave 1" and "Wave 2". A and B are two points on the ocean surface, where the distances from the points to the wave sources are marked in the figure. Deter- mine whether the constructive or destructive interference occurs at point A and B in the following two situations. You need to explain your reasoning. Wave 1 (a) The two waves are produced coherently with a common wavelength of 600 m. (b) The two waves are produced independently (non coherently). The wavelengths of Wave 1 and 2 are 600 m and 300 m, respectively. 600 m

An earthquake under ocean produces two ocean waves. The locations of the sources of the waves are marked with "Wave 1" and "Wave 2". A and B are two points on the ocean surface, where the distances from the points to the wave sources are marked in the figure. Deter- mine whether the constructive or destructive interference occurs at point A and B in the following two situations. You need to explain your reasoning. Wave 1 (a) The two waves are produced coherently with a common wavelength of 600 m. (b) The two waves are produced independently (non coherently). The wavelengths of Wave 1 and 2 are 600 m and 300 m, respectively. 600 m