What is the capacitance of a capacitor with a reactance of 20.0 
at a frequency of 60.0 Hz?
A. 50.0 mF
B. 50.0 
F
C. 133 mF
D. 133
F
E. 833
F
D. 133F
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Nuclear Reactions: Determine the missing product X in the following nuclear reaction: 
O + neutron ? X + alpha particle
Fill in the blank(s) with the appropriate word(s).
Which factor(s) in the Drake equation (Number of Civilizations = NHP × flife × fcivilization × fnow) can we estimate based on discoveries of extrasolar planets?
A) NHP B) flife C) fcivilization D) fnow E) all of the above
Cart A, of mass m, starts from rest and travels in a straight line with acceleration a. It traverses a distance x in time t. Cart B, of mass 4m, starts from rest and travels in a straight line with acceleration 
. At time t it has traversed the distance
A.
.B.
.C.
D.
E.
The largest planet in the solar system is
a. Jupiter. b. Neptune. c. Uranus. d. Saturn. e. Mars.