The diffusion of atoms of similar size depends upon the presence of _____________.
Fill in the blank(s) with the appropriate word(s).
vacancies
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An ohmic conductor is carrying a current. The cross-sectional area of the wire changes from one end of the wire to the other. Which of the following quantities vary along the wire?
A. The resistivity
B. The current
C. The current density
D. The electric field
The energy usage in the United States in 2010 was about 100 × 10^18 J. This can be written as:
(A) 100 million GJ (B) 1000 million GJ (C) 100 billion MJ (D) 100 trillion MJ
Charge of uniform surface density (0.20 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2.0 m.
A. 17 N/C B. 11 N/C C. 23 N/C D. 28 N/C E. 40 N/C
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What will be an ideal response?