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The Sun Has an Expected Main-Sequence Lifetime of About 10¹⁰

Question 89

Multiple Choice

The Sun has an expected main-sequence lifetime of about 10¹⁰ years.What is the lifetime on the main sequence of a 2 solar mass star?

A) 1.8×10⁶ years
B) 1.8×10⁹ years
C) 1.8×10¹⁰ yearsα
D) 1.8×10¹¹ years

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