What do we call the swarm of comet nuclei in a huge shell surrounding the Sun and planets?
A. the Oort cloud
B. the Solar System
C. the ecliptic
D. the Asteroid belt
Answer: A
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Exclusion Principle: Consider the n = 10 shell.(a) What is the largest value of the angular momentum quantum number, ?, in this shell?(b) How many electrons can be placed in this shell?
Fill in the blank(s) with the appropriate word(s).
A convex lens has focal length f. If an object is placed at a distance between f and 2f from the lens on the principal axis, the image is located at a distance from the lens
A) of 2f. B) between f and 2f. C) of f. D) that is greater than 2f. E) of infinity.
Earth's early life forms were marine organisms. Life moved to the land during the
A) Cambrian period. B) Ordovician period. C) Silurian period. D) Triassic period.
The spectrum of the cosmic microwave background peaks at a wavelength of about 1 mm, and the universe has a temperature of about 3 K. If the spectrum instead peaked at a wavelength of 10 millimeters, what would its temperature be?
A) the same temperature of about 3 K B) less than 3 K C) more than 3 K