The object whose observed density differs the least from it’s uncompressed density and it’s reason.

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Chapter 18, Problem 8P

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The object whose observed density differs the least from it’s uncompressed density and it’s reason.

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The astronomer claims that the frequency, f, of a vibrating star depends on its radius R, density r and gravitational constant G. Use dimensional analysis to find this dependence, if f is measured in s-1 and the units of G are L3/(MT2).

E A X X Math M Inbo b Last Class N Netf + Prob Logir M Inbo 4 Good #3 Grou Mail y! CVX EHL 4 fre ET Wha G neve docs.google.com/document/d/1UpdqZs7NIZ-YyjMagyW1hbk0T5S2ZUBluFm-OB5PACA/edit M AST1002001FALL2017PS7 ☆ Request edit access Share File Edit View Tools Help BINARY STARS 31 Problem 5. Binary star systems: Center of mass. (Palen, et. al. Chp. 10 1st Ed. Problem 65) d2 m, = 3m, The center of mass is where the fulcrum of a balance must be. m2 %3D dz = 3d, FIGURE 10.15 The center of mass of two objects is the "balance" point on a line joining the centers of two masses. Study Figure 10.15 in the text (1st ed.). Where would the center of mass be located if а) т — т? b) M¡ = 2m,? c) 2m2= 3m,? 11:50 PM e Type here to search 3/4/2021 + (8) II

E A X M Inbo b Last Class N Netf + Prob Logir | X Math M Inbo Good #3 Mail y! CVX ET Wha 4 Grou EHL 4 fre G neve docs.google.com/document/d/1UpdqZs7NIZ-YyjMagyW1hbk0T5S2ZUBluFm-OB5PACA/edit M AST1002001FALL2017PS7 ☆ A Request edit access Share File Edit View Tools Help Problem 3. Brightness and Luminosity 31 The brightness or flux intensity of a star at an observer's location may be determined by measuring the rate at which its light enters the aperture of an observing instrument (this is referred to as photometry). We will call this "" (with units [Energy/time/Area] or [Watts/Area]). Imagine a sphere of radius, d (labeled "p" in the figure below), equal to the star's distance from the observer's location, at which the star is at the center (see the figure below). ALL of the star's light passes through the surface area of this sphere but only a small fraction passes through the instrument aperture. The fraction of the star's rate of light energy emission measured by the instrument is…