29) Jill does twice as much work as Jack does and in half the time. Jill's power output is
A) the same as Jack's power output.
B) one-fourth as much as Jack's power output.
C) one-half as much as Jack's power output.
D) twice Jack's power output.
E) four times Jack's power output.

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.