A spherical shell has an outside radius of 2.55 cm and an inside radius of a. Th

Question

A spherical shell has an outside radius of 2.55 cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.69 g/cm3. The space inside the shell is filled with a liquid having a density of 1.09 g/cm3. (a) Find the mass m of the sphere, including its contents, as a function of a. (b) For what value of a does m have its maximum possible value? (c) What is this maximum mass? (d) Explain whether the value from part (c) agrees with the result of a direct calculation of the mass of a solid sphere of uniform density made of the same material as the shell.

Explanation / Answer

On the last page, see #47 (the actual question is two pages up, shaded in orange):
http://docs.google.com/viewer?a=v&q=cach…
and the answer will be in last page it may help you my dear friend

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