What must be done to the wires used to make an electromagnet before they are connected

Neatly wrap the wire around the nail

Explanation:

hope this helps ( not sure tho )

By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. If you coil the wire around and around, it will make the magnetic force stronger, but not strong enough.

Explanation:

Hope this helps!!

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

it is b. absorbs thermal energy