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

Superposition principle of forces and waves, Superposition principle of for...

Superposition principle of forces The net force onto a body is equivalent to the total forces impressed upon it. superposition principle of states The resultant qu

Polarization, In case of dextro rotation we consider angle positive & in ca...

In case of dextro rotation we consider angle positive & in case of leavo rotatory we consider negative. But in Maths Rotation to left increases value of angle ( + ve)& towards righ

Why is the mass of a nucleus less than masses of neutron, Why is the mass o...

Why is the mass of a nucleus always less than the sum of the masses of its constituents, neutrons and protons? If the total number of neutrons and protons in a nuclear reaction

#heat transfer, #what are the condition necessary for heat transfer to occu...

#what are the condition necessary for heat transfer to occur?

What is extrinsic semiconductor, (i) It is also known as impure semiconduct...

(i) It is also known as impure semiconductor. (ii) The phenomena of adding impurity is known as Doping.

Rectangular coordinate system, A negative point charge of 10 -6 coulomb is...

A negative point charge of 10 -6 coulomb is located in air at the origin of a rectangular coordinate system. A second negative point charge of 10 -4 is situated on the positive x

Explain ultraviolet radiation, A metal has a work function of 4.80 eV. ...

A metal has a work function of 4.80 eV. Will ultraviolet radiation with a wave length of 385 nm be able to eject a photoelectron from the metal?

Low resistivity materials, Low resistivity materials: The conducting mater...

Low resistivity materials: The conducting materials having resistivity between 10 -8 to 10 -6 ohm-m come under this category and are used in house wiring, as conductors for powe

Motion of satellite, assignment on the above topic in minimum 15 pages

assignment on the above topic in minimum 15 pages

Calculate the impulse of ball, A baseball bat strikes a ball with a force o...

A baseball bat strikes a ball with a force of 30 newtons.  If the ball was in contact with the bat for 1/10 of a second, What impulse did the ball receive? Ans - 3 Newt

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