What is required for an electric charge to flow through a wire? zero resistance in the wire
a balance of electric potential
high resistance in the wire
a difference in electric potentia

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

What is the angular momentum of the bar about the axle?

What kind of simple machine is a catapult?