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andreyandreev [35.5K]
3 years ago
10

What advantages does an electromagnet have over a permanent magnet?

Physics
1 answer:
KonstantinChe [14]3 years ago
4 0
Electromagnets can be turned off, this makes it easier to release things from the magnetic field. 

Hope this helps :)
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Definition of force equation
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Which landform is produced at location E where the Mississippi River enters the Gulf of
mixer [17]

Answer:

a delta

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The landform produced at the location E where the Mississippi River enters the Gulf of Mexico is a delta.

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A large bottle contains a number of medicinal tablets is 0.5kg. Calculate the number of tablets in the bottle?
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A laser used to dazzle the audience at a rock concert emits blue light with a wavelength of 463 nm . calculate the frequency of
ZanzabumX [31]

The wavelength of light is given as 463 nm or can also be written as 463 x 10^-9 m. [wavelength = ʎ]

We know that the speed of light is 299 792 458 m / s or approximately 3 x 10^8 m / s. [speed of light = c]

 

Given the two values, we can calculate for the frequence (f) using the formula:

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Substituting the given values:

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f = 6.48 x 10^14 / s = 6.48 x 10^14 s^-1

<span>f = 6.48 x 10^14 Hz</span>

5 0
3 years ago
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