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Do magnets have to touch each other in order to experience a magnetic force?
Wiki User
∙ 12y ago
not always as the south pole of a magnet is magnetic yet it repels another south pole. :D
Wiki User
∙ 11y ago
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Are magnets attracted to steel?
The three elements effected by magnetism are Iron, Nickel, and Cobalt. Steel is a iron alloy.Generally speaking, yes , steel is magnetic. But it should be noted that there are a number of steels that are not magnetic. In order to answer this question, you must first identify the type of steel. Steel can also be magnetized[or made to be magnetic] using an electric field.
Is a bar magnet a permanent magnet?
A permanent magnet is a magnet which will keep its magnetism for a very long time and is difficult to change. No, As I think a permanent magnet means they have abilities to hold the magnetism when they are magnetized. Such as Alnico permanent magnets, but in fact, they can be demagnetized,such as high temperature, hit each other,pulse waves, out magnetic field influence...What's more, different permanent magnetic material, have different abilities on holding magnetism,they can be used in different environments. you can find some details from some manufacturers website, to learn some knowledges.
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.
How would you describe magnetic domains?
Each magnetic domain has a magnetic field. When an external magnetic field is applied, the magnetic domains will partially align, so the magnetic fields reinforce one another - instead of canceling one another, which is what happens when they are randomly distributed.
What does a planet need in order to have Auroras?
A planet needs to have a magnetic field in order to have auroras.
What must a charged particle be doing in order to experience a magnetic force?
It must be moving
What must a charge particle be doing in order to experience a magnetic force?
It must be moving
Do magnetics have to touch each other in order to experience a magnetic force?
it only depends on your magnet.
Why is magnetic force a non contact force?
Because it's not necessary for objects to be in contact (touching) in order to feel the magnetic force between them.
Do you need 2 magnets to have a magnetic interaction?
In order to have a magnetic interaction u need 2 objects... do the experiment..1. Get 2 magnets/ buy 2 magnets2. Put them close together and they will have a strong interaction...THATS THE PROOF...
What is principle of maglev train?
Magnetic levitation is the method used for maglev trains. In order to levitate a train, superconducting magnetic coils are used to completely expel the magnetic fields which will cause the trains to fly off its track.
Are magnets attracted to steel?
The three elements effected by magnetism are Iron, Nickel, and Cobalt. Steel is a iron alloy.Generally speaking, yes , steel is magnetic. But it should be noted that there are a number of steels that are not magnetic. In order to answer this question, you must first identify the type of steel. Steel can also be magnetized[or made to be magnetic] using an electric field.
Why do magnetic compasses not point exactly?
Without magnetic metal or other magnets nearby to deflect them, magnetic compasses point exactly tothe earth's north magnetic pole. The user must be aware that the north magnetic pole is not located atthe earth's north geographic pole, and make the necessary correction in order to find the true geographicdirections from his location.
What precautions need to be taken when using magnetic field therapy?
The primary precaution involved with magnetic therapy is to recognize the expense of this therapy. Magnets have become big business; they can be found in mail-order catalogs and stores ranging from upscale department stores to.
Breaking a magnet will destroy the magnets magnetic properties. True or false?
True. when you heat a magnet you are supplying it with energy therefore the dipoles have enough energy to free themselves form their initial order.
Does a washing machine need a magnet to operate?
The answer is both yes and no.It actually depends on the kind of washing machine in question.The problem is the motion.A washing machine need some kind of an engine or motor in order to move the cloths back and forth. This can of course be done manually.If we rule out manual washing machines, and also only count in electrical ones then these can be made in two different ways.The motor causing the tumbling or the motion in the washing machine can be made with both permanent magnets like NeoDym, or with purely electrical pulses creating strong electromagnetic fields.Most motors in washing machines made today are made without magnets. It is cheaper to make purely electrical motors where the electricity provides the magnetic fields needed. By electronically rotate the magnetic field around the axis, this will force the motion of the motor. It would use less electricity to make the motors with NeoDym magnets but it would also cost more to produce.As a conclusion: We can not make an electrical washing machine that operate without magnetic fields, but magnetic fields does not have to be made by magnets.
Is a bar magnet a permanent magnet?
A permanent magnet is a magnet which will keep its magnetism for a very long time and is difficult to change. No, As I think a permanent magnet means they have abilities to hold the magnetism when they are magnetized. Such as Alnico permanent magnets, but in fact, they can be demagnetized,such as high temperature, hit each other,pulse waves, out magnetic field influence...What's more, different permanent magnetic material, have different abilities on holding magnetism,they can be used in different environments. you can find some details from some manufacturers website, to learn some knowledges.
