Planetesimals beyond the orbit of _____ failed to accumulate into a protoplanet because the gravitational field of _____ continuously disturbed their motion
a. Neptune; Uranus
b. Jupiter; Mars
c. Earth; Saturn
d. Mars; Earth
e. Mars; Jupiter
e
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The satellite most critical to the study of the formation and structure of the universe is ________, which detected the ripples that led to galaxies
A) WMAP B) Fermi C) Planck D) HST E) COBE
Which of the following is the most reasonable estimate of the number of characters (typed letters or numbers) in a 609-page book? Assume an average of 194 words per page and a reasonable average number of letters per word
A) 5 × 105 char B) 5 × 107 char C) 5 × 106 char D) 5 × 104 char
What is the definition of density?
a. The amount of volume in a standard unit of mass. b. The amount of weight in a standard unit of volume. c. The number of moles in a standard unit of volume. d. The amount of mass in a standard unit of volume. e. The amount of volume in a standard unit of weight.
Minerals that have the same combination of elements but have different atomic arrangements are called
A) polymorphs. B) polygonal. C) tetrahedra. D) polymers.