What is a central dominant galaxy?
A) a galaxy around which many other smaller galaxies orbit
B) a giant spiral galaxy that exerts large tidal forces on other nearby galaxies
C) a spiral galaxy from which many smaller galaxies form when it is stripped apart by tidal forces
D) a giant elliptical galaxy at the center of a dense cluster
E) a hypothesized galaxy type that no longer exists but once dominated the structure of the universe
D
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Applying the Newton's version of Kepler's third law (or the orbital velocity law) to a star orbiting 40,000 light-years from the center of the Milky Way Galaxy allows us to determine
A) the total mass of the entire Milky Way Galaxy. B) the mass of the black hole thought to reside in the center of the galaxy. C) the percentage of the galaxy's mass that is made of dark matter. D) the mass of the Milky Way Galaxy that lies within 40,000 light-years of the galactic center.
Arrange from smallest to largest: the BTU, the joule, and the calorie
a. BTU, J, cal b. J, cal, BTU c. cal, BTU, J d. J, BTU, cal
Two ships set sail from the same port. Ship A sails a distance of 35.0 kilometers in a direction 30.0° north of east, and drops anchor. Ship B sails due south. When ship B is 30.0 km from the port, how far apart are the ships?
a. 46.1 km b. 56.3 km c. 65.0 km d. 75.9 km
What is the electron configuration for Li, which has 3 electrons?
A) 1s3 B) 1s1 2s2 C) 1s2 1p1 D) 1s2 2s1 E) 1s1 2s1 3s1