Quasars

question 33

Multiple Choice

Quasars

• A) are weak sources of light and radio waves.
• B) are large in view of the energy they emit.
• C) show relatively small red shifts, which suggests they are not far away.
• D) seem to have massive black holes at their centers.

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Definitions:

Rational Decisions

Choices made by individuals that align with their own self-interest and are based on an evaluation of the costs and benefits of the action.

Marginal Costs

The extra financial burden of generating one additional unit of a good or service.

Marginal Benefits

The incremental satisfaction or advantage obtained from the consumption of an additional unit of a good or service.

Marginal Cost

Marginal cost is the increase in total production cost that arises from producing one additional unit of a good or service.