# The escape velocity for the earth is v_(e). The escape velocity for a planet whose radius is four times and density is nine times that of the earth,

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The escape velocity for the earth is v_(e). The escape velocity for a planet whose radius is four times and density is nine times that of the earth, is
A. 36 v_(e)
B. 12 v_(e)
C. 6 v_(e)
D. 20 v_(e)

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