yes, when it is heated.
yes,but it can loose it's property by heating,hammering and dropping
since the magnet are place in north and north direction or south and south direction, the magnet will continue to loose it magnetic force of attraction. for more question call me on 2348133605375.
A. Compasses typically use a permanent magnet.
Yes, it is a permanent magnet.
No, it's a permanent magnet. It consists of an iron oxide, and iron is a permanent magnet.
PermanentThere is no source of current in a compass, therefore the magnet is a permanent magnet.
The magnitude of the magnetic field around a permanent magnet is greatest at the poles of the magnet. This is where the magnetic field lines are most concentrated and where the magnetic force is strongest.
All entropy must increase to maxiumum. Ask Multivac.
Permanent magnets attract certain types of metals such as iron, nickel, and cobalt. This attraction is due to the alignment of magnetic domains within the metal, causing a magnetic force to be generated between the magnet and the metal.
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.
When a magnet is attached to a permanent magnet, it can become temporarily magnetized by aligning its magnetic domains with the strong magnetic field of the permanent magnet. This alignment causes the magnet to exhibit magnetic properties for a short period of time.
The magnet in a compass is a permanent magnet. It retains its magnetism without the need for an external electrical current.