A series circuit has equal values for resistance, capacitive reactance, and inductive reactance. The phase angle for this circuit is:
a. 60°.
b. –60°.
c. 180°.
d. not given.
d
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"Gibbous" means a nearly full moon. If I see a waxing gibbous moon tonight, what moon phase will I see in one week?
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A ray of light enters a pane of glass with an angle of incidence of 
The index of refraction of the glass is 1.48. What is the angle of refraction as the ray emerges from the other side of the pane?
A. 
B. 
C. 
D. 
E. 