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abruzzese [7]
4 years ago
11

Explain what causes something to be a magnet

Physics
2 answers:
tiny-mole [99]4 years ago
7 0
You have a positive and negative side to a magnet

If the positive and negative side touch they will connect but if negative and negative touch they would repeal
Luden [163]4 years ago
6 0
Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. Each atom has electrons, particles that carry electric charges.
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Explanation:

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3 years ago
A 3.50-meter length of wire with a cross-sectional area of 3.14 × 10-6 meter2 is at 20° Celsius. If the wire has a resistance of
maks197457 [2]

Answer:

5.6\times 10^{-8}\ Ohm.m

Explanation:

Resistivity is given by \rho=\frac {AR}{L} where A is cross-sectional area, R is resistance, L is the length and \rho is the reistivity. Substituting 0.0625 for R, 3.14 × 10-6 for A and 3.5 m for L then the resistivity is equivalent to

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