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            Magnets only repel magnets of the same polarization, and do not magnetically influence non magnetic materials. If the material is attracted, it means that the material is magnetic. If the material is not attracted, it means the material is non-magnetic.

           The magnetic field strength decreases as distance increases. In fact, a magnet’s power can all but disappear when it’s moved even a slight distance away from the the object(nail). However, stronger magnets can continue to influence the direction of the nail from greater distances away.

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