A galaxy's supermassive black hole represents about ____ for elliptical galaxies
a. half a percent of the mass of the disk
b. five percent of the mass of the central bulge
c. half a percent of the mass of the central bulge
d. five percent of the mass of the disk
e. half a percent of the dark matter in the corona
c
Physics & Space Science
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The Elysium region is a _____
A) highland area on Venus B) frozen polar cap on Neptune C) volcanic plain on Mars D) geological fault on Uranus
Physics & Space Science
_________is the stainless steel used in beer kegs.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
One light-year (ly) is roughly _____
A) 1010 km B) 1011 km C) 1012 km D) 1013 km
Physics & Space Science
If a nitrogen atom and a slightly heavier oxygen atom have equal average speeds, which has the greater kinetic energy?
A) nitrogen B) oxygen C) both the same D) need more information
Physics & Space Science