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In SI base units, the universal gravitational constant G has units of?
Am^2 kg^-1 s^-2
Bm^3 kg^-1 s^-2
Cm^3 kg s^-2
Dm^3 kg^-1 s^-1
Answer & Solution
Correct answer: B. m^3 kg^-1 s^-2
From F = G m1 m2 / r^2, G = F r^2/(m1 m2), which reduces to m^3 kg^-1 s^-2.
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