One Star Appears Blue-White While Another Appears Yellow-Orange

question 24

Multiple Choice

One star appears blue-white while another appears yellow-orange. If this is caused by temperature difference, then

• A)the stars are the same brightness.
• B)the yellow-orange star is hotter.
• C)the blue-white star is brighter.
• D)the blue-white star is hotter.
• E)the yellow-orange star is brighter.

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Definitions:

Total Variable Cost

The total of all costs that vary with the level of production, such as materials and labor costs.

Total Fixed Cost

The sum of all costs that do not change with the level of production or output in the short term, such as rent or salaries.

Purely Competitive Market

A market structure characterized by many buyers and sellers, homogeneous products, and free entry and exit, leading to price taking behavior.

Marginal Cost

Marginal cost is the cost incurred by producing one additional unit of a product or service.