An electrical junction has three wires A, B and C connected to it. Wire A carries 4. 2A going in, wire B carries 2. 6A going out. What does wire C carry?

If you rub a balloon on a piece of fabric or carpeting and then hold it against your head, your hair can stand on end. use what you have learned in this lesson to explain why this happens.

The biggest component / ingredient of summer time smog is

17 points! ! (explain your answer)