A charge of 2.00 ?C flows onto the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging this capacitor?
A)
6.00 ?J
B)
24.0 ?J
C)
12.0 ?J
D)
144 ?J
E)
576 J
C
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Brewster's Angle: The critical angle for an air-glass interface is 42.6°. A light ray in air hits the interface, and the reflected ray is 100% polarized. What is the angle of refraction for that ray?
A. 47.4° B. 55.9° C. 24.3° D. 65.7° E. 34.1°
Neutral hydrogen atoms are best studied from their energy given off as
A) 21-cm waves in the radio region. B) 0.2 nm as X-rays. C) 121.3 nm as Lyman alpha emission in the UV. D) red hydrogen alpha emission, at 656.3 nm. E) Neutral hydrogen gives off no detectable radiation, since it is cold, not hot.
Aluminum alloys are readily deformed into shape because they have the _________-centered-cubic crystal structure.
Fill in the blank(s) with the appropriate word(s).
The buoyant force acts through the center of mass of the displaced fluid
Indicate whether the statement is true or false