Aray of light in air is incident on a flat piece of glass at an angle of î¸ = 54â° with respect to the surface. the glass has index of refraction n= 1.8. what is the angle of the refracted ray?

26.7°

Explanation:

Angle of incidence, i = 54°

refractive index of glass with respect to air, n = 1.8

Let r be the angle of refraction.

By use of Snell's law

By substituting the values, we get

Sin r = 0.449

r = 26.7°

Thus, the angle of refraction in the glass is 26.7°

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )