Inertia And Mass?

Question

An oxygen molecule consists of two oxygen atoms whose total mass is 5.3X10^-26 kg and whose moment of inertia about an axis perpendicular to the line joining the two atoms, midway between them , is 1.9X10^-46 kg.m^2. Estimate, from these data, the effective distance between the atoms.

Answer 1

moment of inertia = R^2 * M

R = sqrt(1.9 10^-46 kg.m^2 / 5.3 10^-26 kg)

R = 6.0 10^-11

distance between the atoms = 2R = 1.2 10^-10

Answer 2

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