Which equation was used by albert einstein to explain the photoelectric effect? [e = energy, h = planck's constant, and v = frequency.] e = h/v e = hv e = v/h e = h - v

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Who is better, messi or cristiano, i need this for a chemistry class. asap

What does earth’s rotation on its axis cause? the tides night and day passing of years phases of the moon