The distance to a star with a parallax angle of 0.2 arc seconds is
A) 0.2 parsec. B) 2 parsecs. C) 5 parsecs. D) 12 parsecs. E) 20 parsecs.
C
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To be dimensionally consistent, distance [L], acceleration 
and time [T] must be related as follows.
A. 
B. 
C. 
D. 
How does the light-collecting area of a telescope with a 10-meter diameter mirror compare to that of a telescope with a 5-meter diameter mirror?
A) The 10-meter telescope has 2 times the light collecting area. B) The 10-meter telescope has 4 times the light collecting area. C) The 10-meter telescope has 10 times the light collecting area.
For a swinging pendulum, the maximum angle that the pendulum’s string makes with the vertical corresponds to what in the pendulum solution ? = A cos (? t + ?)?
A. A B. ? C. ? D. Something else (specify)
A thermal neutron has an energy (in eV) on the order of
a. 40 b. 0.4 c. 4 d. 0.04 e. 400