Multiple Choice
When does a star achieve static equilibrium?
A) When it becomes a main-sequence star.
B) When it leaves the main sequence.
C) When it becomes a protostar.
D) This question has different answers for stars of different masses. Massive stars never achieve equilibrium; small stars achieve hydrostatic equilibrium as soon as they reach the main sequence.
Correct Answer:
Verified
Correct Answer:
Verified
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