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The wave front of a water wave strikes a flat surface at an angle of 26o...

The wave front of a water wave strikes a flat surface at an angle of 26o to the normal of a flat surface and is reflected. At what angle to the normal is it reflected?   

A standing wave is found to have a total of five nodes. If the total length between the boundaries of the wave is 5.68 m, what is the wavelength?   

Two waves are identical. At a point in time the two waves overlap so that one of the waves is phase shifted by π compared to the other wave. What is the resulting amplitude of the superposition of the two waves for the phase-shifted overlap?    

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