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compass needles are tiny magnets that are free to indicate the north and south poles of a magnet? what do you need to do to know the magnet's polarities ?

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Johnsardonaidn

compass needles are tiny magnets that are free to indicate the north and south poles of a magnet? what do you need to do to know the magnet's polarities ?

  • The two polarities of  magnet are Positive and Negative.  If Positive and negative overlap, they will attract each  other while it will repel if Positive to Positive.  And short if they attract the  opposite if they repel the same

How it works

  • A compass points north because both magnets have two poles, one north pole and  one south pole, and one magnet's north pole is attracted to another magnet's south pole. (You might have seen this demonstrated by a pair of  basic bar magnets or refrigerator magnets moved to the end.)
  • The Earth is a magnet that can thus interact with other magnets, and the north  end of a compass magnet is drawn to correspond with the magnetic field of the Earth.  Since the Earth's magnetic north pole attracts the "north"  ends of other magnets, our plane's "south pole" is theoretically

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