I'm having trouble on this too :(
The answer is A: A Dense Ball Of Solid Metal. No One Can Get to there though. Hope that helps :)
~Spades15
To produce an electric current, three things are needed: a supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges. The pathway to carry the charges is usually a copper wire.
It should be two, i think.
Answer:
Physics is the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves.
