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Galicia PAU Physics Física 2o Bachillerato CIUG Practice Questions - Galicia PAU Physics Física 2o Bachillerato CIUG 2026 (Probas D'Acceso á Universidade) Exam

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A planet orbits a star with an orbital period T1 = 8 years at a mean orbital radius r1. A second planet orbits the same star at a mean orbital radius r2 = 4 * r1. According to Kepler's Third Law, what is the orbital period T2 of the second planet?
Correct Answer:
64 years

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