A wave disturbance in a medium is described by y (x,t) = 0.02 cos (50πt+π/2) cos (10 πx) where x and y are in meter and t is in second` A wave disturbance in a medium is described by y (x t) = 0.02 cos (50πt+π/2) cos (10 πx) where x and y are in [...]