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physics

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Calculate the mass of the star using the fact
that the period of the planet is 3.07 × 107
s
and its distance from the star is 1.26×1011 m.
Answer in units of kg

  • physics - ,

    The orbital period is given by

    T = 2π√(r^3/GM)

    We want M, which is thus

    M = r^3/G * (2π/T)^2

    Now just plug in your numbers.

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