The largest known black holes:
A) create the dark nebulae in the plane of the Milky Way.
B) can be no more than 1.4 solar masses, according to Chandrasekhar.
C) lie in the cores of the most massive galaxies.
D) can be no bigger than a small city, just like neutron stars.
E) can be no bigger than the Earth, like white dwarfs.
C
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Which of the following is the largest object in the asteroid belt?
A) Ceres B) Io C) Titan D) Europa
The asteroid Vesta seems to have once been volcanically active, amazing for its small size
Indicate whether the statement is true or false
In an annular eclipse,
A) the Sun appears as a thin, bright ring. B) the Moon appears as a thin, bright ring. C) the Moon is totally blocked by the Earth. D) the Sun is partially blocked by the Earth. E) the Sun is totally blocked by the Moon.
Which of the following is a chemical change?
a. Dry ice subliming b. Limestone being crushed to powder c. Paper being shredded d. Sulfur burning