According to B. Deal and A. Grove, J. Appl. Phys. 36 (1965) 3770, the thickness (h) of the oxide on Si in dry oxygen at 1 atmosphere of pressure follows the relation
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A type Sa galaxy has a larger ________ than type Sc
A) nuclear bulge B) halo C) mass D) number of stars E) spiral structure
On the H-R diagram, most bright naked eye stars would lie at the ________
Fill in the blank(s) with correct word
A particle with electric charge is fired into a region of space where the electric field is zero. It moves in a straight line. Can you conclude that the magnetic field in that region is zero?
1.Yes, you can. 2.No; the field might be perpendicular to the particle’s velocity. 3.No; the field might be parallel to the particle’s velocity. 4.No; the particle might need to have charge of the opposite sign to have a force exerted on it. 5.No; an observation of an object with electric charge gives no information about a magnetic field.
If R = 2.0 k?, C = 4.0 mF, ? = 8.0 V, Q = 20 mC, and I = 3.0 mA, what is the potential difference Vb ? Va?
a.
+7.0 V
b.
+19 V
c.
+9.0 V
d.
?3.0 V
e.
?14 V