8.14 A Saturn year is 29.5 times the earth year. How far is the Saturn from the sun if the earth is 1.50 × 108 km away from the Sun?

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    Vishal Baghel | Contributor-Level 10

    4 months ago

    Distance of the Earth from the Sun, re = 1.50 × 108 km = 1.5 × 1011 m

    Time period of the Earth = Te , Time period of the Saturn Ts = 29.5Te

    Distance of Saturn from the Sun = rs

    From Kepler’s 3rd law of planetary motion, we have T =( 4π2r3GM)1/2

    For Saturn and Sun, we can write, rs3re3 = Ts2Te3

    rs = re(29.5TeTe)2/3 = 1.5 × 1011×(29.51)2/3 = 1.4 X 1012 m

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