Which of the Following Hypothetical Observations Would Contradict Our Theories

question 51

Multiple Choice

Which of the following hypothetical observations would contradict our theories about the formation and evolution of white dwarfs?

• A)discovery of a white dwarf with a 1.5 Msun mass main- sequence companion
• B)discovery of a white dwarf at the center of a planetary nebula
• C)discovery of a white dwarf with a mass 1.5 times that of the Sun (1.5 Msun)
• D)discovery of a white dwarf with a surface temperature of 6000 K

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Definitions:

Contribution Margin

The difference between sales revenue and variable costs, serving as a measure to assess the profitability of products or services.

Fixed Expenses

Costs that do not change with the level of production or sales, such as rent, insurance, and salaries.

Net Operating Income

Income derived from the main activities of a business, not including interest and tax deductions.

Variable Expenses

Costs that change in proportion to the activity of a business, such as raw materials and direct labor costs.