An incident ray of light strikes a diamond at an angle of 45°. The index of refraction of air is 1.0003 and the index

of refraction of a diamond is 2.42.

What is the angle of refraction rounded to the nearest

whole number?

2°

17

19

45

Use the ratio form of kepler’s third law, = , and the data provided to determine the time it takes mars to orbit the sun. round your answer to the nearest tenth. earth’s orbital period = 1.0 earth year earth’s distance from the sun = 1.0 au mars’s distance from the sun = 1.5 au it takes mars about ⇒ 1.8 earth years to orbit the sun.