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3 years ago

Which is the best procedure to make a permanent magnet?

Physics

2 answers:

notka56 [123]3 years ago

7 0

placing a magnetically hard material in a strong magnetic field

fgiga [73]3 years ago

3 0

<h3>Answer;</h3>

Placing a magnetically hard material in a strong magnetic field

<h3>Explanation;</h3>

Magnets are those materials that generate magnetic field. Materials may either be magnetic materials or non-magnetic materials. Non magnetic materials are those materials that can not be attracted by a magnet while magnetic materials are those that can be attracted by a magnet.
Magnetic materials may be classified as either soft magnetic materials or hard magnetic materials based on the ease of magnetization. Soft magnetic materials are those materials that are easily magnetized and easily demagnetized while hard magnetic materials are hard to magnetize and demagnetized.
Hard magnetic materials are used to make permanent magnets. This is done by placing them in a strong magnetic field.

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A cannon, positioned on a hill, shoots a cannonball horizontally at 23 m/s. The cannonball hits the stone wall 1.96 m below the

irina [24]

Answer: 14. 49 m

Explanation:

We can solve this problem with the following equations:

$x=V_{o} cos \theta t$ (1)

$y-y_{o}=V_{o} sin \theta t-\frac{1}{2}gt^{2}$ (2)

Where:

$x$ is the horizontal distance between the cannon and the ball

$V_{o}=23 m/s$ is the cannonball initial velocity

$\theta=0\°$ since the cannonball was shoot horizontally

$t$ is the time

$y=0$ is the final height of the cannonball

$y_{o}=1.96 m$ is the initial height of the cannonball

$g=9.8 m/s^{2}$ is the acceleration due gravity

Isolating $t$ from (2):

$t=\sqrt{-\frac{2(y-y_{o})}{g}}$ (3)

$t=\sqrt{-\frac{2(0 m-1.96 m)}{9.8 m/s^{2}}}$ (4)

$t=0.63 s$ (5)

Substituting (5) in (1):

$x=(23 m/s) cos(0\°) 0.63 s$ (6)

Finally:

$x=14.49 m$

5 0

3 years ago

A wave With wavelength 20 m has a frequency of 12 Hz what is the waves speed

pentagon [3]

Answer:

240m/s

Explanation:

The equation to calculate is wavelength= velocity/ frequency so to find the velocity you would have to multiply frequency by wavelength.

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What kind of symmetry do you have

Keith_Richards [23]

During the daytime, I have mostly line symmetry.

During the night, I often have almost spherical symmetry.

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Read 2 more answers

describe the following wave characteristics associated with Transverse and longitudinal waves-amplitude, wavelength, and frequen

sasho [114]

frequency is how many times a sec the thing vibrates

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Sphinxa [80]

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3 years ago