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Why are some iron objects magnetic and some others not magnetic?
It all depends on the way in which the iron's 'domains' are aligned. Iron is inherently magnetic as a material, but can become demagnetized as time goes on, due to sudden impact or when affected by another magnetic source. For iron to become magnetized 'domains' need to be in parallel with each other so the magnetic field created all flows in the same direction. An unmagnetized iron source has all of its domains misaligned A brief explanation of domains are a series of positive and negative charged atomic particles within the iron itself which behaves much like tiny magnets themselves.
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No. It only needs to pass through a magnetic field to become magnetized. It does not need to come into physical contact with the magnet producing that field. This is because t…he process of magnetization has to do with electromagnetic induction rather than physical contact. You can perform a simple experiment at home to prove this point. You'll need a bar magnet, a paper clip, and a thin sheet of paper. Place the paper between the magnet and the clip. Rub the clip against the paper on top of the magnet, and observe that the clip will still become magnetized even though it is not in physical contact with the magnet.
Every electron is a tiny electromagnet. A pair of electrons spinning in the same direction makes a stronger electromagnet. A pair of electrons spinning in opposite directions,… however, isn't magnetic. The magnetic fields of each cancel one another. This is why most substances are not magnets. In most atoms the various fields cancel each other because the electrons spin in opposite directions.
Iron Magnatized The "magnitized" iron will have domains aligned to Earth's magnetic field. These magnitized iron will have poles and act like magnets. Some …other iron do not behave as magnets because their domains are randomly oriented. This means that the domains do not align and will not act like magnets. This is also the same for other objects that don't behave like magnets.
it doesn't attract all of them because it depends on the magnet. It also depends on the size. The answer is it has to be the same exact magnet to attract all of them.
The magnet will induce magnetism, at least temporarily, in the iron.
Theres a certain mineral inside them(called magnelite) which causes magnetism, this is present in lava. When the magnet comes near a magnetic surface the magnelite in th…em aligns causing them to 'stick'.
Among American pennies (cents, actually) only the famous wartime steel cents made in 1943 are magnetic. All other US cents are made of metals such as bronze or zinc that aren'…t attracted to a magnet. In 200 Canada changed the composition of its cents to copper-plated steel, so those coins are attracted to a magnet but earlier issues aren't British pennies have been issued in both bronze and copper-plated steel so depending on the year of issue they may or may not be attracted. In some years both compositions were used, which makes things a bit more confusing. Euro cents are all made of copper-plated steel so they too are attracted.
The electron spin is actually a tiny magnet When a material is magnetized, the spins line up
Some objects are not attracted by magnets because they are not metalic. If the Magnet just attracts metalic minerals, definitely only metalic are attracted and not non-metalic…..
1.Stroking it with a magnet 2. Applying a current to a coil of wire wrapped around the iron
Objects that are attracted to a magnet are ferrous metals. This means they are composed of elements like iron, nickel, and silver.
Because bigger magnetic force and electron pull can create more strength.
Pennies Older than 1996 are made of a high percentage of copper which is not magnetic, Pennies after 1996 are made of Zinc and or Steel with copper plating .. the Zinc/steel i…s magnetic and will stick to a magnet
thousands! a computer hard drive, electric motors, switches, filters, and on and on
Some other names include NdFeB, Neo, or Nib. This is also known as a rare-earth magnet and they have the potential to store large amounts of magnetic energy. Several differe…nt websites sell these - one is Applied Magnets.