Question Description
Neptune has a radius of 2.48 × 10^7 m and an escape velocity of 23,300 m/s. What is the mass of Neptune? G = 6.67 × 10^-11 N•m^2 /kg^2 .

Final Answer

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:V(escape)= squareroot[(2GM)/r]
23,300= squareroot[2* 6.67 × 10^-11 * M /2.48 × 10^7 ]
542890000 = 13.34*× 10^-11 * M /2.48 × 10^7
M=1008877499025867 = 10* 10 ^14 kg
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