If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of refraction?

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

What four properties do all waves have in common