Question:

Example 6.1: The displacements of two sinusoidal waves propagating through a string arc given by the following equations y1 =4sin(20x – 30t) y2 =4sin(25x – 40t)where x and y are in centimeter and t is in second. a) Calculate the phase difference between these two waves at the points x = 5 cm and t  = 2s. b) When these two waves interfere, what are the maximum and minimum values of the intensity?