Physics
posted by James .
The escape speed from a planet of mass 2.5×10^24 is 7.0 km/s.What is the planet's radius?
Iam using the formula v=sqr(2GM/r)
v=7
G=6.67*10^11
M=2.5*10^24
r=?
I get 6.8*10^12
Where did I go wrong?
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