Quasars Remain Unresolved Sources, Even with the Best Telescopic Observations

question 17

Multiple Choice

Quasars remain unresolved sources, even with the best telescopic observations, because they

• A) are too luminous.
• B) occupy a very small volume.
• C) are quite blue.
• D) produce copious amounts of radio energy.
• E) host supermassive black holes.

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Definitions:

Unit Contribution Margin

The amount that the sale of one unit contributes toward covering fixed costs and then to profit, calculated as the selling price per unit minus the variable cost per unit.

Contribution Margin Ratio

A financial metric that shows the percentage of sales revenue remaining after variable costs are subtracted, indicating how efficiently a company can produce and sell products.

Break-even Point

A point where total cost and total revenue are equal, indicating no profit or loss and where production or sales start becoming profitable.

Fixed Expenses

Overheads such as rent, employee salaries, and insurance that do not fluctuate with changes in sales or manufacturing volumes.