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Heating a bar magnet could reduce its magnetism because the heat, by raising the energy level in the metal, disorients the atoms, which disrupts the magnetism.
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Will a magnet stop a bullet?
Noop. Even if you had a bullet that was attracted to a magnet (like an iron bullet), it would have too much kinetic energy to be effected. I guess if you had a really big and thick magnet, it could stop a bullet, just like a book can sometimes stop a bullet. This has nothing to do with magnetism, but just the interaction of mass.
Can one re magnetize a magnet?
Yes, a magnet can be ridden of it's magnetic properties by either using it to pick up iron filings or heating it up and rubbing it on another magnet. This is called demagnetizing. On the other hand, magnets can be re-magnetized by heating and holding the south end of a magnet on one end and the north side of another magnet on the opposite end although the magnet will not be as strong as before.
Is it possible to magnetise an object permanently?
Yes, however the object must be a magnetiseable metal such as iron. To magnetise it you could use a permanent magnet and slide it along the metal pice in one direction several times. Than you pice of iron for example would be a permanent magnet. Another way of doing this is, if there is no permanent magnet available, is to use a SOLENOID. You could build yourself one: Check it out on the internet. This solenoid would make your pice of iron permanently magnetic with the use of ELECTRICITY. This shows that magnetism and electricity are closely related. GUD LUCK and I hope my answer helped you.
What could you do to an electro magnet to make it weaker?
You can pull the cord from the magnet to make it weaker so it wont pick up as many items you think it will
Is a pencil magnetic or nonmagnetic?
Yes a pencil could be magnetized. But it could only be magnetized with pencils only not a magnet.
Does a magnet lose its magnetism when taken to the moon?
No, because the moon has a gravitational pull as well. Well actually, I don't know, but it could be true...
Is magnetism or electricity better?
It could be either one. It all depends on what you need to use it for. For example, you need a magnet to pick up scrap metal, but the same magnet is no good at all for lighting a flashlight.
Which method is appropriate for separating a mixture of iron and aluminum?
You could do this using a magnet, Iron filings are attracted to a magnet, aluminium filings are not.Hint: magnetism, investigate the relative magnetic properties of the metals.Iron is a ferrous material, and aluminum is non-ferrous. A magnet would separate the two materials as the iron would be attracted to the magnet while the aluminum filings would not. The term ferrous basically refers to any material which contains iron.
How could you test the effects of heating and cooling on the magnetization of a bar magnet?
well i depand on the south and north pole
Can a magnet be broken?
Not exactly. All pieces of the magnet retain their ferrous properties, but if they were (for example) dropped, then the shock of the fall could potentially make them lose a bit of magnetism. Extreme temperature changes and high power electric discharges could also decrease the power of the magnet.
What is one way that a magnet's domain could become unaligned?
heat
How do you demagnetise a magnet?
One method is to strike it repeatedly with a hammer and you could also pass an A.C current through a solenoid quickly to remove the magnetism. By throwing from hight also
How do i you could test the effects of heating and cooling on the magnetization of a bar magnet?
what ever figure out ur own anwsers people dont cheat
Will a magnet stop a bullet?
Noop. Even if you had a bullet that was attracted to a magnet (like an iron bullet), it would have too much kinetic energy to be effected. I guess if you had a really big and thick magnet, it could stop a bullet, just like a book can sometimes stop a bullet. This has nothing to do with magnetism, but just the interaction of mass.
How do you write a sentence with the word magnetism in it?
Well you could say............ I hate magnetism (:
What are the two ways to increase the time of fall of a magnet through a tube?
If the tube is a conductor, the first way involving magnetism that will slow the magnet down is competely natural. When the magnet passes through a conductor, the changing magnetic field will induce a current in the conducting tube opposing the velocity of the magnet. This will cause the magnet to slow down through the length of the tube. The classic demonstration of this involves a copper tube and a small, round magnet. The second way involving magnetism is to wrap the tube in a coil of wire, creating a solenoid. After you have wrapped the tube, if you put a current that is counter-clockwise through the solenoid, the magnet will slow down because the solenoid creates a magnetic field that is directed upward. With this method, you could change the direction of the current and the magnet will fall faster instead.
How are magnets destroyed?
Ferromagnetism can be impaired by creating an opposing magnetic field. A wire coil placed around a magnet creates an electromagnetic field. If this is aligned in the opposite direction, it could eventually remove the intrinisic field of the permanent magnet.In many cases, simply heating a magnet would likewise remove the magnetic field.Use a degaussing coil (driven by AC, not DC). Gradually reduce the field strength either by reducing the AC current or slowly separating the coil and the object.
