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In 10 years the magnet kt will only depolarise 1%. So that means it is going to take 1000 years to depolarise completely in temperatures below 180 F° I belive
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∙ 11y ago
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Is iron a permanent magnet?
Yes, as it is a magnet that will remain for a long time that makes it permanent. : ) x
How can magnetism be destroyed?
---- Magnetism can be destroyed by following methods:---- * By heating the magnet, * By hammering the magnet.--->In accordance to this point...allowing the magnet to fall violently* By keeping similar poles of magnets together for a long time. * [not sure about this]by keeping magnet under running water.
Is a bar magnet a temporary magnet or not?
Yes, as long as their spins are aligned, they will attract other materials whose spins are aligned, be they temporary or permanent.
How does heat affect magnetism?
If one continously heats a particular magnet to high temperatures or long time or both, it loses it magnetism because the particles get excited and start forming no-magnetic arrangements.
How long do cheap magnets last compared to more expensive ones?
A permanent magnet will retain its magnetism unless it is affected by a strong outside magnetic or electrical force, or elevated temperatures. If they are not exposed to any of these conditions, permanent magnets will lose magnetism on their own, however this degradation is very slow, on the order of one percentage point every ten years or so.
What type of magnet keeps its magnitism for a long time?
a permanent magnet does that.
What type of magnet attracts to iron but not for a long time?
Bar magnet. Because a bar magnet is strong to iron..... Or that's what we did in class.....
When a piece of iron behaves like a magnet when it is touching a permanent magnet that is called?
The process by which a iron piece touching a permanent magnet behaves as a magnet as long as it maintains contact is called magnetic induction. not only does this work when the iron is physically touching the magnet but it works as long as the piece of iron remains under the influence of the magnet. A iron piece attracted to a magnet through a paper with out any physical contact will also behave as a magnet.
What is magnet which is long and straight?
Screw SCIENCE!!
Does Lemon Juice affect a magnet?
No, but if you leave the magnet in lemon juice long enough it will start to corrode.
Will you die if you swallow a magnet?
As long as the magnet is not sharp or too large to fit through your digestive system, no, they are not harmful.
Why the iron can make the magnet move?
Because anything that has iron is attracted to magnet so whether its not fully an iron as long as it has iron in it, it can make the magnet move or attract it
Can gold stick to a magnet?
Short answer: no. Long answer: it depends.
Can a magnet get stronger than N52?
By N52 your reffering to neodymium rare earth permenant magnets. This is not the only type of rare earth but no others reach this strength. The rare earth doesnt pass the N52 rating, but..the magnets "pull" strength or potential is inversly relates to its size, so a 1" diameter x 3" long n52 (magnetized through length) will pick up more then a say 1" cube. The influential magnetic field and pull increases as the size increases. You still have temperature to factor in as well, over 120degrees neodymium mags quickly lose strength. Ceramic is closer to 150 and at a point the strongest ceramic will be stronger then the strongest neodymium. If you need more juice step intothe world of electromagnets.
How close does a magnet have to be to metal to have an effect on it?
It depends on the gauss value of the magnet. Yourstood on a big magnet. It'scalled Earth. Youre a long way from the poles but it still has an effect on metals.
Is neodymium radioactive?
Neodymium is radioactive, though for most practical purposes it can be regarded as stable. 30.4% of neodymium is of two radioactive isotopes, but their half lives are very long, the shorter being 2,290,000,000,000,000 years. Like all other elements, neodymium has synthetic radioactive isotopes.
When you use a bar to pick up small iron or steel why do you use the end of the magnet?
Magnets have a polarity which is generated by exposing them to a stronger magnetic field during manufacture. They can be polarized through any two faces on the magnet. Typically long skinny magnets are magnetized end to end. Flat magnets are magnetized side to side. Neodymium magnets are relatively strong, and frequently magnetized between flat faces. The magnetic field is very weak on the sides, and very strong at the ends (faces that were polarized).
