A uniform, spherical cloud of interstellar gas has mass 1.8×1030 kg and radius 1.2×1013 m, and is rotating with period 1.5×106 years. If the cloud collapses to form a star 7.4×108 m in radius, what will be the star's rotation period?

A uniform, spherical cloud of interstellar gas has mass 1.8×1030 kg and radius 1.2×1013 m, and is rotating with period 1.5×106 years. If the cloud collapses to form a star 7.4×108 m in radius, what will be the star's rotation period?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section39.12: Gravitational Lenses And Black Holes

Problem 39.5CE

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A uniform, spherical cloud of interstellar gas has mass 1.8×10³⁰ kg and radius 1.2×10¹³ m, and is rotating with period 1.5×10⁶ years. If the cloud collapses to form a star 7.4×10⁸ m in radius, what will be the star's rotation period?

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