A gardener uses 2700 J of work to push a wheelbarrow for 60 seconds. How much power does she use?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Decreased sensitivity to an unchanging stimulus is known as

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical