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A uniform, spherical cloud of interstellar gas has mass 1.8×1030 kg and radius 1.0×1013 m ,...

A uniform, spherical cloud of interstellar gas has mass 1.8×1030 kg and radius 1.0×1013 m , and is rotating with period 1.3×106 years. If the cloud collapses to form a star 6.8×108 m in radius, what will be the star's rotation period?

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