A Star with a Surface Temperature of 4000 K and a Luminosity

question 176

Multiple Choice

A star with a surface temperature of 4000 K and a luminosity of about 10-² times that of the Sun is a member of which luminosity class? (See Figure 10-10,Comins,Discovering the Essential Universe,6th ed.)

• A) III, giant
• B) I, supergiant
• C) II, bright giant
• D) V, main-sequence

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Definitions:

Hurricane

A tropical cyclone with winds exceeding 74 mph, typically characterized by rain, thunderstorms, and strong winds.

Inferior Good

A type of good for which demand decreases when consumer income rises, unlike normal goods, for which the opposite is observed.

Demand Curve

A graphical representation showing the relationship between the price of a good and the quantity demanded by consumers at those prices.

Supply Curve

A graphical representation showing the relationship between the quantity of goods that producers are willing to sell and the price of those goods.