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Physics

General

Easy

Question

The escape velocity of an object from the earth depends upon the mass of earth (M), its mean density ( $rho$ ), its radius (R) and gravitational constant (G), thus the formula for escape veloctiy is

V=R $\sqrt{\frac{8 π}{3}} G P$
V=M $\sqrt{\frac{8 π}{3}} G R$
V= $\sqrt{2 G M R}$
V= $\sqrt{\frac{2 G M}{R^{2}}}$

The correct answer is: V=R $square root of fraction numerator 8 straight pi over denominator 3 end fraction end root G P$

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