Ablock of mass m is attached to ideal spring of constant k. when the spring is neither stretched nor compressed, block is at the equilibrium position (x = 0).
assume the force between the mass and the spring obeys hooke’s law: fs = - kx, where x is the displacement and fs is the restoring force. the restoring force is always directed toward the equilibrium position. in this example of vibrational motion, the restoring force illustrates newton's

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly