Suppose that a block is pulled 16 meters across a floor. what amount of work is done if the force used to drag the block is 22 n?

a. 352 j

b. 220 j

c. 330 j

d. 200j

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.