Mystery #1Tier 2physics / magnets
Why does every magnet have two ends that behave in opposite ways?
Grab a bar magnet and one end tugs hard at a paperclip. Flip it round and the other end tugs just as hard, yet the two ends are not twins. Bring two magnets together and sometimes they leap into each other, sometimes they shove apart. Every magnet in the world, from a crane magnet to the speck inside a fridge sticker, has these two different ends, and never just one. Why?

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What's your hunch? Why does a magnet always seem to have two different ends?
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