Two identical point sources are generating waves with the same frequency and amplitude. The two sources are in phase with each other, so the two sources generate wave crests at the same instant. The wavelength of the waves is equal to the distance between the two sources. See section 9.11 in the notes. D A B -Point sources Rank the maximum amplitude of the wave at the labeled points according to phase considerations only. Do not take into account the diminishing amplitude as waves get further from the source. Enter in the form A > B = C... make sure you separate characters with a space. Equal values can be entered in either order. Hint: Max occurs at AL=nÀ. Min occurs at L=AL=nN2. Compare the distances that the waves travel to the point from each point source. For example, there will be complete constructive interference at C because the point sources will arrive at C separated by one complete wavelength. If the distance the waves traveled were separated by 0.5 wavelengths or 1.5 wavelengths there would be destructive interference. Rank the maximum amplitude taking into consideration the reduction in intensity as the points get further from the source. For example, the waves from the point sources will experience complete constructive interference at both D and C but the amplitude will be greater at D because D is closer to the sources than C and the intensity will therefore be greater.

Two identical point sources are generating waves with the same frequency and amplitude. The two sources are in phase with each other, so the two sources generate wave crests at the same instant. The wavelength of the waves is equal to the distance between the two sources. See section 9.11 in the notes. D A B -Point sources Rank the maximum amplitude of the wave at the labeled points according to phase considerations only. Do not take into account the diminishing amplitude as waves get further from the source. Enter in the form A > B = C... make sure you separate characters with a space. Equal values can be entered in either order. Hint: Max occurs at AL=nÀ. Min occurs at L=AL=nN2. Compare the distances that the waves travel to the point from each point source. For example, there will be complete constructive interference at C because the point sources will arrive at C separated by one complete wavelength. If the distance the waves traveled were separated by 0.5 wavelengths or 1.5 wavelengths there would be destructive interference. Rank the maximum amplitude taking into consideration the reduction in intensity as the points get further from the source. For example, the waves from the point sources will experience complete constructive interference at both D and C but the amplitude will be greater at D because D is closer to the sources than C and the intensity will therefore be greater.

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