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OpenStudy (anonymous):
Which of the following can be done to demagnetize a permanent magnet
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OpenStudy (anonymous):
cutting the magnet in half heating the magnet past the Curie point bending the magnet freezing the magnet to absolute zero
OpenStudy (insa):
Heating a magnet past its Curie point will destroy the long range ordering. Contact through stroking one magnet with another in random fashion will demagnetize the magnet being stroked, in some cases; some materials have a very high coercive field and cannot be demagnetized with other permanent magnets.
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