The Local Group of galaxies spans about 30 million light-years in diameter
Indicate whether the statement is true or false
FALSE
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Conversion of Units: There are 640 acres in a square mile, 5280 ft in one mile, and 3.28 ft in one meter. How many acres are there in a hectare, which is a square one hundred meters on each side?
Fill in the blank(s) with the appropriate word(s).
The frequency of a body oscillating from a spring on the Moon is___________ the frequency of the same body oscillating from the same spring on Earth
a. the same as b. larger than c. smaller than d. not related to e. depending on the mass, smaller or larger than
The larger terrestrial planets have surface features that tend to be
A) more cratered. B) older. C) younger. D) more rocky. E) more icy.
If you were to take a voyage through the entire disk of the Milky Way, what kind of material would you spend most of your time in?
A) empty space-a pure vacuum B) rarefied clouds of atomic hydrogen C) star clusters D) hot bubbles of ionized hydrogen E) cool, dense clouds of molecular hydrogen