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What is the approxiamate value of escape velocity for the earth?
1 11 km/s
2 50 km/s
3 19.5 km/s
4 56.5 km/s
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Answer / salamander
sqrt(2*g*r)[g=9.81m/s2
r=6400km(radius of earth) ]
=11.2 km/sec
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