Power: A 120-? laboratory resistor is rated at 0.25 W. How much current can safely flow through the resistor?
A. 30 A
B. 2.1 mA
C. 22 mA
D. 46 mA
Answer: D
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Superconductors lose their superconducting property above their ________ temperature.
Fill in the blank(s) with the appropriate word(s).
The best way to measure the age of an ancient bone is
A. potassium-argon dating B. neutron activation C. controlled thermonuclear fusion D. radiocarbon dating
An observer in the Southern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing
a.
straight north
b.
straight east
c.
straight south
d.
straight west
e.
straight up, directly overhead
Capacitors in Combination: A potential difference of V = 100 V is applied across two capacitors in series, as shown in the figure. If C1 = 10.0 ?F and the voltage drop across it is 75 V, what is the capacitance of C2? 
A. 30 ?F B. 2.5 ?F C. 7.5 ?F D. 3.3 ?F