A Pair of Stars Orbit Around One Another in an Elliptical

question 29

Multiple Choice

A pair of stars orbit around one another in an elliptical orbit with a semi-major axis, a, of 1 AU with an orbital period, P, of 1 year. What is the mass of the pair of stars

• A)1 solar masses
• B)2 solar masses
• C)4 solar masses
• D)8 solar masses
• E)16 solar masses

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Definitions:

Retained Earnings

The cumulative amount of net income kept within a company after dividends are paid, reinvested in the business or used to pay off debt.

Net Income

The total earnings of a company after subtracting all expenses, including taxes and operating costs, from its total revenues, indicating the company’s profit.

Dividends

A portion of a company’s earnings distributed to its shareholders as a reward for their investment.