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Bar magnet. Because a bar magnet is strong to iron..... Or that's what we did in class.....
Wiki User
∙ 12y ago
Wiki User
∙ 6y agoThis would be a temporary magnet.
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How will you use a solenoid to magnetise a steel bar?
When you pass an electric current through a solenoid, a roughly uniform magnetic field is produced inside the coils. Exposing a ferromagnetic material such as steel to a magnetic field will magnetise it, so placing a steel bar inside the coils of a solenoid with sufficient current passing through it will magnetise the bar.
What is made when iron is burnt?
Burning of iron requires lot of energy.When iron is burnt, if there is not fuel to aid the fire then iron will not burn for long time. But let say in this case iron is being readily burned it will produce moderate amounts of smoke, carbon dioxide, water and some metal oxides.
How do you separate a mixture of gold nuggets from iron filings and sodium?
The separation of gold from iron filings and sodium metal (a dangerous substance which will react with water in the air) could be done in two steps. Take a magnet and put it inside a plastic bag. Carefully and fully move the bagged magnet over the mixture, gently stirring it to insure the magnet can "reach" all the iron filings. When you are done, lift the magnet clear of the mixture, and you should have all the iron filings stuck to the magnet, which is inside the bag. If you carefully "invert" the bag, you'll then have the bag around the filings, which will still be stuck to the magnet with a layer of plastic bag between the two. Then just close the bag and remove the magnet. Your iron filings have been separated and bagged up. Now turn your attention to the gold and sodium mixture. Put them in a big heavy plastic container. If you *carefully* add water, you will get a chemical reaction. It is *critical* to put water in a drop at a time. (Yes, a drop at a time.) The sodium will react with the water and create sodium hydroxide, which is powerful base. It will also create a lot of heat, so you have to take all day to drop in the water so it won't melt your bucket. There will be some strong fumes, too, so take precautions. The bucket, because it is plastic, won't react with the sodium hydroxide. After you spend all day dripping the water into the mixture to react with all the sodium, you'll have a solution of sodium hydroxide with the gold in it. Strain this mixture and the gold will remain in the sieve. You'll need to wear a ton of protection to perform this evolution. Rinse your gold well to remove the traces of the sodium hydroxide and you're in business.
What happen when iron is exposed to air?
If an iron nail is exposed to air for a long time it reacts with the water vapour (moisture) and oxygen present in the atmosphere and a reddish-brown powdery coating is formed on it known as RUST (Fe2O3.xH2O) .
What is the average time iron takes to rust?
It takes an hour for an iron to rust
Is iron a permanent magnet?
Yes, as it is a magnet that will remain for a long time that makes it permanent. : ) x
Why aren't all iron materials permanent magnets?
When a magnet or iron piece is watched under a powerful microscope we will obseve that a magnet or iron is made up tiny tiny pieces which cannot be further divided realistically such small pieces are known as domains. In a magnet all domains are in the same direction due to which it attracts iron. While in a iron these domains are arranged randomly which nullify its magnetism. When a magnet is brousht near an iron matrial all the domains get attracted to the magnet due to which domains in iron get arranged in a particular direction due to wich at that time they act as magnets but as soon as the magnet gets farther the domains again arrange them selves randomly due to which tey do not remain permanent magnets
Give example of a temporary magnet?
when a magnet is hardly rubbed on a iron ,for some time it reacts as a magnet. An example of a temporary magnet is used in acar breakers yeard . A crane fitted with amagnet picks up a car and then the power to the magnet is cut and the car drops.
What type of magnet keeps its magnitism for a long time?
a permanent magnet does that.
How long does iron take to decompose?
iron does not decompose but after a long time and i mean a long time it just starts to flake away but does not decompose
Is the Bermuda Triangle supernatural?
Yes it is as some say it does have to do wih a huge magnet down there that attracts the planes and makes it crash i mean i would say it is supernatural and has Magnetic force at the same time
Is Bermuda Triangle supernatural?
Yes it is as some say it does have to do wih a huge magnet down there that attracts the planes and makes it crash i mean i would say it is supernatural and has Magnetic force at the same time
How are temporary and permanent magnets alike?
Yes Permanent magnets is the term used to describe magnets that are always magnetic, an non permanent magnet would be an electro magnet which is only a magnet when an electric current is put through it.
What are the three uses of a temporary magnet?
a magnet that remains magnetized for only a small time interval as compared to a permanent magnet.
What attracts people to the Eiffel Tower?
It was built a long time ago and is pretty. It also is one of the symbols of France.
How can 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.
How could an old magnetic field be preserved in rocks?
Because lava can melt iron (demagnetizing it) and when it solidifies, it will pick up whatever magnet field it is currently subject to, thus locking in a record of the magnet field at the time in history.
