Ruby has an index of refraction of 1.7. Calculate the maximum angle with respect to the normal at which a light ray escapes a ruby if the ruby is in air. a. 17°
b. 36°
c. 53°
d. 90°
e. Light escapes at all incident angles.

If jesus walked on water, does that mean he swims on land

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

What is the major limitation to the light microscope?