What law states that energy can neither be created nor destroyed, but it is transformed?
question 13 options:
law of thermonuclear energy
law of kinetic energy
law of conservation of energy
law of thermal energy

Which of the following statements is true? a. most heat energy is easily recovered and used for useful actions. b. friction causes molecules to vibrate more slowly. burning air and gasoline in an c. engine changes chemical energy into mechanical energy. it is impossible to d. change mechanical energy into mechanical energy.