To produce change in motion, a force must be a (n)

A) balanced force

B) unbalanced force

C) frictional force

D) gravitational force

What do astronomers mean when they say that the universe is homogeneous?

How would your present weight change if Earth had twice the mass that it does now?

Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s A. The ball is on the ground, so the mechanical energy is zero B. 2 J C. 1 J D. 4 J

When generators are spun by turbines, they a. Produce nuclear energy. B. Store potential energy. C. Produce electricity. D. Burn fossil fuels.

Would a pencil rolling off a desk be kinetic energy?

An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. in the process, the electron acquires a speed ve, while the proton acquires a speed vp. find the ratio ve/vp.

Why water is matter? what is the reason

Restate newton's first law in terms of acceleratin

What step precedes the onset of hydrogen fusion in a star?

Manuel is holding a 5kg box how much force is he exerting on it