Which is the smallest?
A. The distance from the Sun to its nearest neighboring star
B. The distance from the Sun to the Andromeda Galaxy
C. The distance from the Sun to the Virgo cluster of galaxies
D. The distance from the Sun to the center of the Milky Way Galaxy
E. The Solar System.
Ans: E. The Solar System.
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The six face-centered lattice points of a FCC lattice unit cell contribute ______________lattice point(s) to a unit cell.
Fill in the blank(s) with the appropriate word(s).
A fatal flaw with Ptolemy's model is its inability to predict the observed phases of
A) the Sun during an eclipse. B) Mars and Jupiter. C) the Moon in its monthly cycle. D) Jupiter and Saturn. E) Mercury and Venus.
A main-sequence star's luminosity can directly inform us of
A) the star's radius. B) the rate at which it converts hydrogen to helium. C) the star's mass. D) the star's distance from us.
A magnet will become weaker if it is
A) dropped on a hard surface. B) held in a hot flame. C) either D) neither