A megaparsec (Mpc) is equal to _____
A) 3.3 thousand ly
B) 3.3 million ly
C) 3.3 billion ly
D) 3.3 trillion ly
B
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Of all the active galactic nuclei, the ________ is the most energetic
A) quasar B) giant elliptical C) radio lobe galaxy D) blazar E) Seyfert
The shapes of planetary orbits are __________
Fill in the blank(s) with correct word
On a Hertzsprung-Russell diagram, where on the main sequence would you find stars that have the greatest mass?
A) upper right B) lower right C) upper left D) lower left
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25.0 V and the other is at 33.0 V. The surfaces are 1.25 cm apart. What is the magnitude of the electric field midway between the surfaces?
A. 25.0 V/m
B. 29.0 V/m
C. 33.0 V/m
D. 
E. 