As a Main-Sequence Star Exhausts Hydrogen in Its Core, Its

question 42

Multiple Choice

As a main-sequence star exhausts hydrogen in its core, its surface becomes___ and its energy output per second (luminosity) becomes ____

• A) hotter; larger
• B) cooler; larger
• C) hotter; smaller
• D) cooler; smaller

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Definitions:

MC

Short for Marginal Cost, it refers to the change in total cost that arises when the quantity produced is incremented by one unit.

MR

Marginal Revenue, the additional income that is gained from selling one more unit of a good or service.

Purely Competitive Seller

A seller operating in a market where there are many buyers and sellers, no barriers to entry, and products are homogenous, leading to perfect competition.

Total Fixed Cost

The sum of all costs that do not change with the level of output, such as rent, salaries, and insurance premiums.