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

Polarizability, It is the electric dipole moment induced in a system, such ...

It is the electric dipole moment induced in a system, such as an atom or molecule, by an electric field of unit strength.

Calorimatery, Calorimetry is the act of calculating the heat of chemical re...

Calorimetry is the act of calculating the heat of chemical reactions or physical changes, or the science of making such measurements. Calorimetry is performed with a calorimeter. T

Calculate the refractive index of liquid, Focal length of convex lens is 0....

Focal length of convex lens is 0.1 m. A liquid lens is formed between a plane surface and one face of this lens of radius of curvature 0.12m. The converging combination formed is f

Mauls law, Description about mauls law

Description about mauls law

Help, http://s17.postimage.org/8pyqqqbm7/Untitled000.png

http://s17.postimage.org/8pyqqqbm7/Untitled000.png

Equilibrium, A bar has a 20N weight at one end. You have a weight of 15N to...

A bar has a 20N weight at one end. You have a weight of 15N to hang somewhere on the bar so that the bar is in equilibrium. Where would you hang the 15 N weight on each of these ba

Explain functions of the commutator, Functions of the commutator:  A co...

Functions of the commutator:  A commutator is a device, which under certain conditions changes ac into dc and vice versa. The commutator is a form of rotating switch placed

Plasma, what is plasma and explan in simple word

what is plasma and explan in simple word

Resistivity, What components/materials are chosen because of their especial...

What components/materials are chosen because of their especially high resistivity and explain why high resistivity

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