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Naya [18.7K]
3 years ago
11

Metals are good conductors of electric current for which of the following reasons?They possess high concentrations of protonsThe

y possess low concentrations of protonsThey possess high concentrations of free electronsThey possess low concentrations of free electrons
Physics
1 answer:
KatRina [158]3 years ago
3 0

The correct answer is: They possess high concentrations of free electrons

The main characteristic of good conductors such as metals is the presence of movable electrically charged particles, or electrons. So, when an electric current is applied to a metal, the electrons will move and allow electricity to pass through them. Materials opposite of metals, with low electron mobility are not good conductors, instead they are called insulators.

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Here is a graph of speed vs time. If the object is moving to the east, which BEST describes the speed and velocity of the graph?
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A block with a weight of 9.0 N is at rest on a horizontal surface. A 1.2 N upward force is applied to the block by means of an a
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Answer:

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Explanation:

A 9N block would exert 9N of normal force on the horizontal plane under normal conditions. But in this case, we have a spring taking away some of the force by applying an upward force on the box.

So the force exerted by the box on the surface would now be:

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8 0
3 years ago
A surveyor is using a magnetic compass 6.4 m below a power line in which there is a steady current of 120 A. (a) What is the mag
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Answer:

Explanation:

Magnetic field due to a long current carrying conductor

μ₀ / 4π x 2i / r  ( i = current , r = distance of point from wire )

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= 3.75 µT.

b )

The direction of this field will be horizontal hence it will affect magnetic needle.

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