Aphysical change creates a new substance and is not reversible. select the best answer from the choices provided t f

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.

The dot diagram represents the motion of the motorcycle as it moves from left to right

If element x has 99 protons how many electrons does it have