ch13-p070 - 70. We estimate the planet to have radius r =...

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70. We estimate the planet to have radius r = 10 m. To estimate the mass m of the planet, we require its density equal that of Earth (and use the fact that the volume of a sphere is 4 π r 3 /3): 3 33 4/ 3 4 / 3 E E EE mM r rR R §· = ¡ = ¨¸ ππ ©¹ which yields (with M E 6 × 10 24 kg and R E 6.4 × 10 6 m) m = 2.3 × 10 7 kg.
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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