What happens to the potential energy? The potential
energy decreases
because Magnet 2
moves against the
magnetic force.
The potential
energy decreases
because Magnet 2
moves in the same
direction as the
magnetic force.
The potential
energy increases
because Magnet 2
moves against the
magnetic force.
The potential
energy does not
change because the
magnets in the
system do not
change.
Lo

it is b that is the answer.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.