A vertical stick is dipped up and down in water at P. In two seconds, three wave crests are produced on the surface of the water. wave crests Which statement is true? Distance Y is the wavelength of the waves. The frequency of the waves 3Hz. Distance X is the amplitude of the waves. O Each circle represents a wavefront. of thego

Which of the following conditions guarantees that two overlapping waves will exhibit the property of interference? O a. The waves must have the same frequencies. O b. The waves must be sinusoidal. O c. The waves must be coherent. O d. The waves must be in phase. O e. The waves must have the same amplitudes.

The figure below represents the profile of a wave at three different times

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.   A. List all the labeled points where the waves from the two sources constructively interfere.  If there are no such points, indicate that by stating "none".  Separate each letter with a space.  Hint: Determine the difference in the distance that each wave travels from the point sources.  For example the difference between the distance travelled to B = 1.5λ - 0.5λ.  Constructive interference occurs at ΔL=nλ.  Destructive occurs at ΔL=nλ/2.   B. List all the labeled points where the waves from the two sources destructively interfere.  If there are no such points, indicate that by stating "none".  Separate each letter with a space.  Hint: Constructive occurs at ΔL=nλ.  Destructive occurs at L=ΔL=nλ/2.