9. When making a circuit, why is gold wiring not used? a. It doesn't conduct electricity
b. It is too expensive
c. It doesn't bend enough to form wire

Gold is not used for making electric wires because it is too rare, and too costlier than Copper. Silver and copper are used for making wires. Copper is almost used in electric lines

object 2 because all the other ones are wrong

this is poiselle's equation from fluid mechanic in physics. mech eng