Celestial latitude is called
a. declination.
b. right ascension.
c. the parsec value.
d. the zenith angle.
a
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Which of the terrestrial planets have the most similar atmospheric compositions?
A. Venus and Mars B. Mercury and Venus C. Earth and Mercury D. Earth and Venus E. Earth and Mars
Two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 × 106 N/C
(a) What is the charge density on each plate? (b) If the very large charged plates are moved 2 times farther apart, what is the electric field between the plates now?
What does this photograph show?
A) It is a picture of our own Milky Way Galaxy. B) It is a picture of the Andromeda galaxy, located about 2.5 million light-years away. C) It is a picture of a cloud of gas known as the Orion Nebula. D) It is a picture of our own solar system. E) It is a picture of a young star in the process of being born.
Which of the following elements would be expected to be most stable?
A) Platinum-195 B) Iron-56 C) Carbon-12 D) Bismuth-209 E) Helium-3