Which of These Phenomena Is NOT Produced by Collisions Between

question 29

Multiple Choice

Which of these phenomena is NOT produced by collisions between galaxies?

• A) hot interstellar gas, detected by recent space-borne X-ray telescopes
• B) concentration of galaxies into clusters and superclusters
• C) distorted spiral arms in many galaxies
• D) initiation of significant new star formation in so-called starburst galaxies

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Definitions:

Marginal Revenue

The additional income gained from selling one more unit of a product or service.

Monopolist's Demand Curve

The demand curve faced by a monopolist, which is the same as the market demand curve, indicating that the monopolist can set the price only by choosing the quantity to produce.

Elastic

Describes a situation in which the demand or supply for a product changes significantly when its price changes.

Barriers

Obstacles that prevent or hinder entry into a market or the pursuit of certain activities, which can be economic, legal, technical, or natural in nature.