SAMPLE PROBLEM (Class 13) ANS. a) y = y m sin( kx – ϖ t ), where the minus sign means the wave travels in the + x direction. y m = 2.0 cm = 0.020 m, which is given in the problem. 1-m 63 m 10 .0 2 2 = = = π λ k-1 s 2500 Hz) 400 ( 2 2 = = = f . Then, y = (0.020 m) sin [(63 m-1 ) x + (2500 s-1 ) t ] b) Taking the derivative of the expression for the displacement of the wave with respect
This is the end of the preview. Sign up
access the rest of the document.