The transfer of energy through empty space is called?

The transfer of energy through empty space is called Convection

The Real life ecample of a convection is on our fireplace. The fireplace relase the heat energy to the empty space (your room), within time, this air will be cooled by your room and reheated again in your fireplace. Creating a circular motiion

Ineed the problem dude

Since the pully is a simple machine so the mechanical advantage is a 1