2018年USAAAO短问题第3道

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Jingsong Guo（讨论 | 贡献）2020年3月9日 (一) 18:12的版本 （创建页面，内容为“==英文题目== 3. [5 pt] What is the main-sequence lifetime of a star with a mass of 0.1 solar masses, and a star with a mass of 10 Solar masses? Assume that stel…”）
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英文题目

3. [5 pt] What is the main-sequence lifetime of a star with a mass of 0.1 solar masses, and a star with a mass of 10 Solar masses? Assume that stellar luminosity, $$L ∝ M3.5$$ , where M is stellar mass, and that the main-sequence lifetime of the Sun is 10 billion years.

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