As an Observer Is Investigating a Black Hole from a Safe

question 176

Multiple Choice

As an observer is investigating a black hole from a safe distance, a rivet pops out of the tailfin on their spaceship and falls toward the black hole. Will the observer ever see the rivet enter the event horizon?

• A) Yes. However, it will be so blueshifted that the observer would need X-ray eyes to see it.
• B) No. It will be compressed to zero size and disappear from sight before it reaches the event horizon.
• C) Yes. The observer will see it fall faster and faster until it disappears as it falls through the event horizon.
• D) No. It will appear to stop and hover forever before entering the event horizon.

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Definitions:

Implicit Costs

The opportunity costs of using resources owned by the firm for its project instead of selling or renting them to others.

Fixed Costs

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

Variable Costs

Variable costs are expenses that change in proportion to the level of production or business activity.

Average Fixed Costs

The total fixed costs of production divided by the number of units produced, representing the fixed cost per unit of output.