Which is true about atoms?
a. atoms have no mass
b. atoms are mostly empty space
c. most of the space in an atom is taken up by the nucleus?

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

In physics the desire of an object to keep doing what it is doing is termed?

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.