Helium Burns in the Core of a Horizontal Branch Star

question 29

Multiple Choice

Helium burns in the core of a horizontal branch star via __________ and produces __________.

• A) the triple-alpha reaction;carbon
• B) the proton-proton chain;lithium
• C) the triple-alpha reaction;oxygen
• D) the proton-proton chain;iron

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Definitions:

Average Variable Cost

The total variable costs (such as labor and materials) divided by the quantity of output produced.

Average Total Cost

The total cost of production (fixed plus variable costs) divided by the total quantity of output produced, indicating the cost of producing each unit of output.

Variable Costs

Costs that vary directly with the level of production or output, such as materials and labor costs.

Fixed Costs

Costs that do not change with the amount of goods or services produced by a business over a certain period, such as rent, salaries, and insurance premiums.