Is this statement true or false? suppose there is a simple circuit such as a battery, wire, switch, and one light bulb. when the switch is closed, the light bulb lights up. if a person replaces a section of the wire with a piece of solid rubber, the light bulb will still light up. a. true b. false

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.