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-BARSIC- [3]
3 years ago
5

What is an electromagnet? What are the parts of an electromagnet? How is an electromagnet useful when compared to a permanent ma

gnet?
Biology
1 answer:
kondaur [170]3 years ago
3 0

Answer:

Explanation:

The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.

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Which of the following is not accounted for by cell theory
olganol [36]

Answer:

what are the following answers?

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3 years ago
Which time of air mass originates in Canada?
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The answer is:  [B]:  "Continental Polar (cP)" .
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4 years ago
What two layers of the earth are either partially or totally melted
Lostsunrise [7]

Answer:

Lithosphere and asthenosphere

Explanation:

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7 0
3 years ago
The front leg of a cat, the front flipper of a dolphin, and the wing of a bat have the same structure and order of bones. These
Kay [80]

Answer:

The bones are homologous structures

Explanation:

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Thus, the bones are homologous structures is correct.

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4 years ago
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