The Flat Rotation Curves of Spiral Galaxies Tell Us That

question 19

Multiple Choice

The flat rotation curves of spiral galaxies tell us that they contain a lot of dark matter. Do they tell us anything about where the dark matter is located within the galaxy?

• A) Yes, they tell us that dark matter is spread throughout the galaxy, with most located at large distances from the galactic center.
• B) Yes, they tell us that dark matter is concentrated near the center of the galaxy.
• C) Yes, they tell us that dark matter is spread uniformly throughout the galactic disk.
• D) No, we cannot determine anything about the location of dark matter from the rotation curve.

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Definitions:

AVC

Average Variable Cost; the total variable costs of production divided by the quantity of output produced.

ATC

Average Total Cost, which is calculated by dividing the total cost of production by the quantity of output produced. It encompasses both fixed and variable costs.

Competitive Forces

Factors that influence the competitive environment of a market, including rivalries among existing competitors, potential new entrants, substitute products, bargaining power of buyers, and bargaining power of suppliers.

Technological Change

Innovations or advancements in technology that improve processes, increase efficiency, or create new products or markets.