Answer:
Step-by-step explanation to arrange a magnet so that the hoop does the opposite of what it did previously:
1. Place the magnet on a flat surface.
2. Identify the direction that the hoop moved previously (i.e., whether it continued or stopped).
3. Turn the magnet so that the poles are facing in the opposite direction of the previous movement of the hoop.
4. Observe the new movement of the hoop and check if it is doing the opposite of the previous movement.
How did the arrangement of the magnet differ in this case? In this case, the arrangement of the magnet was different because the poles were faced in the opposite direction of the previous movement of the hoop. This change in the direction of the magnet's poles caused the hoop to move in the opposite direction.