Where else could Snell’s law be useful in determining the path of a light ray in your everyday life?

Contact glasses.

Explanation:

-Anytime you put on a pair of glasses, or see light bend through a glass of water or a prism, this rule is in action.

-In short, Snell's law governs the angle by which electromagnetic radiation such as light refracts, or changes direction, as it passes from one material to another and slows down.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

conservation of mass

mass before something happens = mass afterwards