Find the Average Density of a Red Giant Star with a Mass

question 4

Multiple Choice

Find the average density of a red giant star with a mass of 20 * 10³⁰ kg (approximately 10 solar masses) and a radius of 150 *10⁹ m (equal to the Earth's distance from the sun) .

• A)1.41*10^-4 kg/m³
• B)0.007 kg/m³
• C)1.41 kg/m³
• D)710 kg/m³
• E)1.41*10 ^{- 3} kg/m³

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Definitions:

Monopolistically Competitive Firm

A type of firm in a market structure where many companies sell products that are similar but not identical, and each has some control over its price.

Monopolistic Competition

A market structure characterized by the presence of several firms that sell similar, but slightly differentiated, products and services where each has some control over its prices.

Zero Economic Profits

A situation in perfectly competitive markets where firms earn just enough revenue to cover their total operating costs, leaving no supernormal profit.

Positive Economic Profits

The situation in which a firm's total revenues exceed its total costs, including both explicit and implicit costs, signaling that the firm is doing better than the next best alternative.