Define the magnets, Physics

Assignment Help:

Define the Magnets

Magnets work according to rules similar to electric charges. All magnets have two poles, north (actually north-seeking) and south poles. Like poles repel and unlike poles attract. If you break a magnet in two, you get two magnets, each with a north and south pole. Try it yourself - but not with your brother's favorite magnet.

1218_Magnets 1.png

Modern theories of magnetism explain magnetic materials as  materials in which the magnetic domains in the material are aligned. Magnetic domains are each about an area of about 10 m by 10 m or 1020 atoms or molecules of the material. The more consistently these domains line up, the stronger the magnetic field of the material. This helps us explain why dropping or heating magnets can weaken them. Dropping a magnet can realign its domains. Kinetic theory explains that as a material is heated up, the atoms gain more vibration energy, which can also randomize the alignment of a material's magnetic domains.

Magnetic materials are ones that are attracted to a magnet such as iron, nickel and steel. Some of these materials can be temporarily magnetized by contact with a strong magnet. Nonmagnetic materials are ones not affected by a magnet such as glass, wool, aluminum or brass.

39_Magnets 2.png


Related Discussions:- Define the magnets

Explain general theory of gravitation, Explain General Theory of Gravitatio...

Explain General Theory of Gravitation The idea of a gravitational field takes all the gravitational effects of a given mass like Earth and expresses them mathematically as a grav

Important facts of laue experiment on x-ray diffraction, Q. Write down two ...

Q. Write down two important facts of Laue experiment on X-ray diffraction. The Laue experiment has established subsequent two important facts (1) X-rays are electromagnetic

Electronics, is voltage source have infinite internal resistance

is voltage source have infinite internal resistance

Dipole moment, what is the electric field when both the charges are same in...

what is the electric field when both the charges are same in dipole

Diffraction grating, when told that a diffraction grating has 80 lines per ...

when told that a diffraction grating has 80 lines per mm we need to work out what 1 line would equal. I have the solution but i cannot figure out how they got 1 line to equal 1x10

Applications of newton''s laws - ii, APPLICATIONS OF NEWTON'S LAWS - II ...

APPLICATIONS OF NEWTON'S LAWS - II 1.  As the body moves through the body it displaces the fluid. It has to exert a force on the fluid to push it out of the path. By the Newto

Describe working of heat engine, Describe working of Heat engine Heat ...

Describe working of Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat to work.  * It having of a

State moseleys law, Q. State Moseley's law. The frequency of the spectr...

Q. State Moseley's law. The frequency of the spectral line in the qualities X-ray spectrum is directly proportional to the square of the atomic number (Z) of the element consid

Calculate the frequency of the tuning fork, The end of a pipe is inserted i...

The end of a pipe is inserted into water.  A tuning fork is held over the pipe. If the pipe resonates at lengths of 15 cm and 35 cm, what is the frequency of the tuning for

How atom was postulated when electrons revolved in orbits, The idea that el...

The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: a) Thompson b) Bohr c) Ruther

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd