Hydrostatic equilibrium is the balance between ________ of a star and ________.
A. the size; energy production
B. the internal pressure; gravity
C. hydrogen fusion; temperature
D. the internal pressure; energy production
Answer: B
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A. 160 m B. 330 m C. 320 m D. 410 m E. 490 m
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A. 0.84 B. 0.050 C. 0.0014 D. 0.024
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