40 points easy
determine the mechanical energy of this object : a 1-kg ball rolls on the ground at 2 m/s.
a. the ball is on the ground, so the mechanical energy is 0
b. 2j
c. 1j
d. 4j

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

When a neutrally charged atom loses an electron to another atom, the result is the creation of a. two charged atoms. b. two negatively charged atoms. c. two positively charged atoms. d. two neutrally charged atoms.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply