If you are given time and distance, you can determine power if you know

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.