The Sun rotates about the center of the Milky Way Galaxy (Fig. 6-29) at a distance of about 30,000 light- years from the center (1 ly = 9.5 × 105 m). If it takes about 200 million years to make one rotation, estimate the mass of our Galaxy. Assume that the mass distribu- tion of our Galaxy is concentrated mostly in a central uniform sphere. If all the stars had about the mass of our Sun (2 x 1030 kg), how many stars would there be in our Galaxy? %3D (II) Sun AW (I) 1E bins viool 30,000 ly ov

The Sun rotates about the center of the Milky Way Galaxy (Fig. 6-29) at a distance of about 30,000 light- years from the center (1 ly = 9.5 × 105 m). If it takes about 200 million years to make one rotation, estimate the mass of our Galaxy. Assume that the mass distribu- tion of our Galaxy is concentrated mostly in a central uniform sphere. If all the stars had about the mass of our Sun (2 x 1030 kg), how many stars would there be in our Galaxy? %3D (II) Sun AW (I) 1E bins viool 30,000 ly ov

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

The Sun rotates about the center of the Milky Way
Galaxy (Fig. 6-29) at a distance of about 30,000 light-
years from the center (1 ly = 9.5 × 105 m). If it takes
about 200 million years to make one rotation, estimate
the mass of our Galaxy. Assume that the mass distribu-
tion of our Galaxy is concentrated mostly in a central
uniform sphere. If all the stars had about the mass of our
Sun (2 x 1030 kg), how many stars would there be in our
Galaxy?
%3D
(II)
Sun
AW (I) 1E
bins viool
30,000 ly ov

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