Two bar magnets are held close together. when they are released, they move toward one another. which best describes the original placement of the magnets?
1)the magnets are placed end to end with the north pole of each pointing toward the other.
2)the magnets are placed end to end with the south pole of each pointing toward the other.
3)the magnets are placed side by side with the like poles of each magnet near the other.
4)the magnets are placed side by side with the opposite poles of each magnet near the other.

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.