the magnet does not atract paper pin then how the paper pin stand with out any support​

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the magnet does not atract paper pin then how the paper pin stand with out any support​

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Cora 1 month 2021-08-17T06:10:51+00:00 1 Answer 0 views 0

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    2021-08-17T06:12:37+00:00

    Step-by-step explanation:

    A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.

    A “horseshoe magnet” made of alnico, an iron alloy. The magnet, made in the shape of a horseshoe, has the two magnetic poles close together. This shape creates a strong magnetic field between the poles, allowing the magnet to pick up a heavy piece of iron.

    Magnetic field lines of a solenoid electromagnet, which are similar to a bar magnet as illustrated below with the iron filings

    A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include the elements iron, nickel and cobalt and their alloys, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.

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18:9+8+9*3-7:3-1*13 = ? ( )