Design a slab waveguide such that the bounce angle of the fundamental TE mode (with respect to the guide normal) is 80°. The parameters are nf = 1.62, ns = 1.50, nc = 1.00, and λ = 810 nm. g

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Which situation will produce the greatest change of momentum