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A neutron star is an extremely dense, rapidly spinning object that results from the collapse of a massive star at the end of its life. A neutron star with 2.3 times the Sun’s mass has an essentially uniform density of 4.8 × 1017 kg/m3. (a) What’s its rotational inertia? (b) The neutron star’s spin rate slowly decreases as a result of torque associated with magnetic forces. If the spin-down rate is 5.6 × 10−5 rad/s2, what’s the magnitude of the magnetic torque?
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