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Inquiry into Physics

8th Edition
Ostdiek
ISBN: 9781337515863
Textbook Problem

. Sirius B has a mass and radius of kg and m, respectively. Assuming Sirius B is perfectly spherical in shape, compute the ratio of the Using this result, confirm that the redshift quoted in Section 12.2 for this star if

To determine

The ratio of Δtf/Δtd.

Explanation

Given info:

m=2.1×1030kgr=5.5×106m

Formula used:

Δtf/Δtd=1[1( dsd)]12

ds=2GMc2,G=6.67×1011Nm2/kg2.

Calculation:

Substituting the given values, we get

ds=2×6.67×1011×2.1×1030(3× 108)2=3

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