The car observer measured initial energy as 0.5*5*6*6 Joules = 90 J and final energy as 0.5*5*(-3)*(-3) + 0.5*30*(+1.5)*(+1.5) Joules = 56.25J with a loss of Joules. The sidewalk pedestrian observer reported an initial energy of 0.5*5*(+4)*(+4) + 0.5*30*(-2)*(-2) = 100 J and final energy as 0.5*5*(-5)*(-5) + 0.5*30*(-0.5)*（-0.5） = 66.25J with a loss of Joules. The arithmetic showed that the total kinetic energy loss to heat, sound, etc. of the two-object system (impactor-target system) is the s for both observers, just like the exchange impulse of 45 N-sec is the s for both observers.

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

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