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Magnetic field are unaffected by those materials. Magnets and electrical fields in general are only effected by other magnetic fields. Think of a compass that is brought near another magnet. Magnetic fields are exponential in strength meaning that they are most strong at the surface and quickly fade with distance. Dont have the equation but its simple and straight forward. So if you want a magnetic field to extend through a thick (5mmm) cardboard or plastic you will need larger more powerful magnets such as rare earth or neodymium magnets. Its really about the strength of the magnet and the distance of the magnetic field. Hope that helps.

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13y ago
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15y ago

Not at all, apart from their ability to maintain a distance between the magnet and anything magnetic.

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13y ago

glass it will have less magnatisim plastic is next then cardboard

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14y ago

Maybe?It only matters what kind of cardboard it is!

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Q: How is strength of a magnet affected by cardboard?
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NO!!! the strength of magnet is not affected by temperature


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