1.

The oxygen molecule has a mass of 5.4xx10^(-26)kg and moment of inertia is 1.8xx10^(-46)kg.m^(2) about an axis passing through its centre and perpendicular to the line joining the two atoms. Suppose the mean speed of the molecule in sample of oxygen has is 500"ms"^(-1) and its kinetic energy of rotation is two third of its kinetic energy of translation. Its angular velocity is found to be approximately nxx10^(12) rad/sec where n = __________.

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