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• a  not able to conduct heat or electricity or sound

• Because it can be either electrically conducting or nonconducting, depending on the impurities added to it.
• The fuselages are double-walled like a thermos bottle, with nonconducting material between the walls.
• Because ferrimagnetic substances are electrically nonconductingtherefore immune to stray currentsthey have proved highly useful material for the coating of magnetic tape .

• nonconductive
• non-conducting

• conductive