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.
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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).
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).
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?
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