Question
A roofer rolls a magnetic sweeper across your lawn after you get a new roof. He needs to pick up the nails dropped during the job. How does the potential energy of the system change as picks up a nail?
a. As the nail reaches the magnet, the potential energy decreases
b. As the nail reaches the magnet, the potential energy increases
a. As the nail reaches the magnet, the potential energy decreases
b. As the nail reaches the magnet, the potential energy increases
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