Which of the Following Is Not a Piece of Evidence

question 48

Multiple Choice

Which of the following is not a piece of evidence supporting the conclusion that active galactic nuclei are powered by accretion disks around supermassive black holes?

• A)Observed radiation from the galactic center varies significantly in brightness in times as short as a few days.
• B)Infrared observations show that many stars are forming near the centers of active galaxies.
• C)Radio observations sometimes show long jets of material extending millions of light-years out from the galactic center.
• D)The total amount of radiation coming from the galactic center is,in some cases,comparable to the amount of radiation put out by 10 billion or more ordinary stars.
• E)Spectral lines from the galactic center indicate that clouds of gas are orbiting a central object at very high speed.

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Definitions:

Marginal Cost

Marginal Cost is the cost of producing one more unit of a good or service, a crucial concept in economics for decision-making and pricing strategies.

Cartel

A formal agreement among competing firms in an industry to control prices, limit output, or divide markets.

Total Industry Output

The aggregate production of goods and services in a specific industry within a given period.

Marginal Cost

The cost of producing one additional unit of a good or service, reflecting changes in variable costs.