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07-10-2020
Physics

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if you put something like apiece of cardboard between a magnet and a iron nail, the magnet still holds the nail. how?

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07-10-2020

Magnetic fields can go through some materials (like cardboard). Electric fields can also do that. Electromagnetic waves can do that. It’s not at all unusual because magnetic fields are not made up of particles so they can go through materials.

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