Question: Two very small planets orbit a much larger star. Planet A orbits the star with a period T A . Planet B orbits the star

Two very small planets orbit a much larger star. Planet A orbits the star with a period TA. Planet B orbits the star at four times the distance of planet A, but planet B is four times as massive as planet A. Assume that the orbits of both planets are approximately circular.
Planet B orbits the star with a period TB equal to
TA4.
TA.
16TA
4TA.
8TA.
Two very small planets orbit a much larger star.

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