Which statement is true of light when it speeds up on entering another medium
a) the index of refraction is higher in the second medium that it was in the first
b) the index of refraction is lower in the second medium than it was in the first
c) the speed of light though the medium is close to the speed of light in a vacuum
d) the angel of incidence equals the angle of refraction in this instance

Aregular polygon has angkes of size 150° each. how many side has the polygon

What determines the amount of inertia an object has

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.