What form of energy does a compressed spring have? a. heat energy b. kinetic energy c. chemical energy d. potential energy

Which type of wave can travel without a medium

What does si stand for, when referring to a system of measurement

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.