RLC Circuits: As shown in the figure, an ac source whose rms voltage is 80 V is in series with a 100-? resistor and a capacitor whose reactance is 200 ? at the frequency of the source. What is the rms voltage across the capacitor?
A. 66 V
B. 68 V
C. 70 V
D. 72 V
E. 74 V
Answer: D
Physics & Space Science
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When the reflection of an object is seen in a convex mirror the image will:
a. may be either real or virtual. c. always be virtual. b. will always be enlarged. d. always be real.
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Which of the following nuclear reactions is forbidden?
A. 
B. 
C. 
D. 
Physics & Space Science
What can you infer about the lepton number of the anti-neutrino?
A. This quanton has lepton number = +1. B. This quanton has lepton number = -1. C. This quanton has lepton number = 0. D. One cannot determine this quanton’s lepton number from the processes we have studied.
Physics & Space Science
Which of the following compounds would you expect to be soluble in water?
a. PbCO3 b. Ag2CO3 c. CuCO3 d. K2CO3
Physics & Space Science