1. A spot light in air shines on the surface of Plexiglass at a hockey rink, making an angle of 56? to the normal. What is the angle of refraction inside the Plexiglass? 2.A ray of light in hand sanitizer (ethyl alcohol) makes a 39? angle to the normal. What angle, to the normal, does the light exit into air?

3.A ray of light that was in a diamond exits into air at an angle of 50? to the normal. What was the angle of incidence inside the diamond?

4.A scuba diver sees rays of the sun, making an angle of 25? to the vertical, beneath the water. At what angle above the horizon is the sun?

5.A spotlight on a boat pictured below is 2.5 m above the water. A spotlight strikes the water at a point that is 8 meters behind the boat on the water's surface. The depth of the water is 4 m. How far behind the stern of the boat does the light hit the bottom