Calculate the Main-Sequence Lifetimes of the Following Stars of Different $\odot$

question 57

Essay

Calculate the main-sequence lifetimes of the following stars of different spectral types: B0 (18 M _$\odot$ ), B5 (6 M _$\odot$ ), A5 (2 M _$\odot$ ), F5 (1.3 M _$\odot$ ), and M0 (0.5 M _$\odot$ ). What trend do you notice in your results?

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Definitions:

Titular Democracies

Political systems that have the formal appearance of a democracy through elections and institutions, but lack substantive democratic practices, such as respect for civil liberties and genuine political competition.

Collective Freedoms

The rights and liberties shared by a community or society as a whole, facilitating the collective pursuit of well-being and common goals.

Economic Development

The process by which a country improves the economic, social, and political well-being of its people through growth and the efficient management of resources.

Social Classes

Categories of individuals in a society distinguished by relative position or status, often determined by wealth, occupation, education, or familial lineage.