A main-sequence star is unique because
A) hydrostatic equilibrium exists at all radii.
B) energy transport occurs via convection throughout much of its interior.
C) hydrogen burning occurs in its core.
D) it emits strong surface winds.
Correct Answer:
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Q5: The evolutionary cutoff between low- and high-mass
Q6: The main-sequence lifetime of a star is
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Q11: If a main-sequence star's core temperature increased,
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Q12: The more massive a star,the more hydrogen
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