A Double-Star System with Each Star Having the Mass of the Sun

question 13

Multiple Choice

A double-star system with each star having the mass of the Sun has an orbital period of 1 year.A second double star system,also with each star having the mass of the Sun,has an orbital period of 8 years.If the separation of the stars in the first system is d and the orbits in both cases are circular,what is the separation of the stars in the second system?

• A)0.5d
• B)2d
• C)4d
• D)8d

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