A ball is thrown horizontally from a cliff which is 62.8 meters tall with a horizontal speed of 21.3. Determine the time the ball is in the air. Use g=9.8 m/s^2

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

What are chlorofluorocarbons and what impact do they have on the atmosphere?

The discovery of the electron as a subatomic particle was a result of