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Posted by on Saturday, May 18, 2013 at 5:09pm.

The radius of planet X is 5.0 bleems. It takes 4 earth years to complete it's orbit. Another planet, Z, orbits the same sun and has an orbit with the radius of 12 bleems.

How long does it take for planet Z to complete an orbit?

  • Physics - , Saturday, May 18, 2013 at 6:43pm

    kepplers third law: the square of the orbital period is proportional to the cube of mean radius.

    4^2/T^2=5^3/12^3

    solve for period T

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