The Doppler Effect Is Observed Only When

question 80

Multiple Choice

The Doppler effect is observed only when

• A) the source of a wave moves toward a stationary observer.
• B) there is relative motion between the source of a wave and an observer.
• C) an observer moves toward the stationary source of a wave.
• D) both the source of a wave and an observer are moving toward each other.

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Definitions:

Marginal Cost

The cost incurred by producing one more unit of a product or service.

Supply Curve

A graph showing the relationship between the price of a good or service and the amount of it that suppliers are willing to offer for sale at each price level.

Law Of Demand

The principle that, other things equal, an increase in a product’s price will reduce the quantity of it demanded, and conversely for a decrease in price.

Government Subsidy

Financial support provided by a government to individuals, businesses, or other governmental entities to support economic activities deemed beneficial.