With what minimum speed must you toss a 200 g ball straight up to hit the 11 m -high roof of the gymnasium if you release the ball 1.2 m above the ground? solve this problem using energy.

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.