Which of the following characteristics are displayed by hard magnetic materials?

Physics

1 answer:

irakobra [83]2 years ago

4 0

Answer:

Characteristics are displayed by hard magnetic materials:

B. relatively large hysteresis loop.

D. Magnetization and demagnetization require relatively high applied fields.

Explanation:

They are otherwise called as the permanent magnets, they have the ability to retain is quality even after being magnetised. They have the ability of greater hysteresis loop, it is the relation between the induced magnetic flux to that of magnetizing force. When it is high gives the hard magnetic material. They have high retentivity and coercivity. This means the driving field during magnetization is null. To get coercivity the driving field should be made in the opposite direction.

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2 years ago

An electron is moving at 2.02.0 ×× 105m/s105 m/s in the positive y direction. The magnetic force on the electron is 3.03.0 ×× 10

inn [45]

Answer:

The magnitude and direction of the magnetic field is 93.63 T in negative x direction.

Explanation:

Given;

speed of the electron in positive y direction, v = 2.0 x 10⁵ m/s

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The direction of the magnetic field is is as;

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6 0

2 years ago

Name one situation in which you might notice the reflection of a wave

Lady bird [3.3K]

Answer:

A perfect example of wave reflection is an echo.

Explanation:

A wave reflection takes place when waves cannot pass through a surface and in turn they bounce back. It is not necessary that wave reflections can only happen with sound waves, they can also take place in light waves. Also, the waves which are reflected have the same frequency as the original wave, but their direction is different. When a wave strikes an object in the same angle, they bounce back straight but when they hit an object with different angle, their direction changes.