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hi please show all steps thanks 3. The time it takes for the gravitational collapse of a uniform sphere of mass m is: t =

hi please show all steps thanks

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3. The time it takes for the gravitational collapse of a uniform sphere of mass m is: t = Gm-, where the gravitation constant G = 6.67 x 10-11 m3 ko-seca. What are the dimensions of the luminosity L of the sphere? [A=3] Provide possible units. [T=1]

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