Trevor moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?
a The potential energy decreases because the train moves in the same direction as the magnetic force.
b The potential energy decreases because the train moves against the magnetic force.
c The potential energy increases because the train moves against the magnetic force.
d The potential energy does not change because the magnets in the system do not change.
Trevor moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?
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The correct answer is b: The potential energy decreases because the train moves against the magnetic force.
Explanation: As the magnetic toy train moves away from the magnet, it is moving in the direction opposite to the force exerted by the magnet. When an object moves against a force (like a magnetic force), work is being done against that force, which leads to a decrease in potential energy in the system. Keep up the good work in understanding these concepts! If you need more help, feel free to check the extended services page.