Which quantities define momentum? A) how much weight an object has, plus magnitude of its acceleration.

B)how much force is pushing an object, plus it’s speed.

C)how fast can an object travel, plus its weight.

D)how much matter does an object has, plus the magnitude and direction of it’s motion

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?