Consider an expanding sphere of instantaneous radius R whose total mas – InterviewSolution

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1.	Consider an expanding sphere of instantaneous radius R whose total mass remains constant. The expansion is such that the instantaneous density ρ remains uniform throughout the volume. The rate of fractional change in density (1ρdρdt) is constant. The velocity v of any point on the surface of the expanding sphere is proportional to
Answer» Consider an expanding sphere of instantaneous radius $R$ whose total mass remains constant. The expansion is such that the instantaneous density $ρ$ remains uniform throughout the volume. The rate of fractional change in density $(\frac{1}{ρ} \frac{d ρ}{d t})$ is constant. The velocity $v$ of any point on the surface of the expanding sphere is proportional to

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