If each copper atom in a wire were to contribute two conduction electrons instead of just one, its conductivity would

A. increase by a factor of 4.
B. increase by a factor of 2.
C. remain the same.
D. decrease by a factor of 2.
E. decrease by a factor of 4.


B. increase by a factor of 2.

Physics & Space Science

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A mechanical advantage of polymer semiconductors relative to single-crystal silicon is that polymers are _________.

Fill in the blank(s) with the appropriate word(s).

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During each cycle, the compressor in a certain ideal Carnot refrigerator performs 480 J of work to remove 150 J of thermal energy from the interior of the refrigerator

How much thermal energy do the coils behind the refrigerator discharge into the kitchen each cycle? A) 110 J B) 150 J C) 330 J D) 480 J E) 630 J

Physics & Space Science

The change in shape due to transport of atoms through the bulk of the material is called _________ creep.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Resistance and Resistivity: A 25-m wire of diameter 0.30 mm draws 0.499 A when connected across a 3.0-V potential difference.(a) What is the resistance of the wire?(b) What is the resistivity of the material from which the wire is made?

What will be an ideal response?

Physics & Space Science