Write an expression for a linearly polarized lightwave of angular frequency  and amplitude E propagating along a line in the xy-plane at 45 degree to the x-axis and having its plane of vibration corresponding to the xy plane. At t=0, y=0, and x=0 the field is zero

Which best represents the law of conservation of mass ?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Compare the patterns of the two waves shown in the image. which statement is true about these waves?