When the magnet falls toward the copper block, the changing flux in the copper creates eddy currents that oppose the change in flux. the resulting braking force between the magnet and the copper block always opposes the motion of the magnet, slowing it as it falls. the rate of the fall produces a rate of flux change sufficient to produce a current that provides the braking force. if the copper is cooled with liquid nitrogen, the resistivity of the copper drops dramatically. how will this affect the speed at which the magnet falls toward the copper? a) the magnet will fall at the same speed. b) the magnet will fall more rapidly. c) the magnet will fall more slowly.