The strength of the gravitational force between two objects depends on two factors: mass and distance. Suppose that two objects attract each other with a gravitational force of 16 units. If the distance between the two objects is
doubled, then what is the new force of attraction between the two objects?
A)
4 units
B
8 units C- 16 units

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.