Friction and normal force are examples of

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Photons with the highest energy have the longest period