Where does the sun shine the most on the moon?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The energy released by a nuclear fusion reaction is produced when

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.