1.

A right circular cone of density p, floats just immersed with its vertex downwards in a vessel containing two liquids of densities \[{{\rho }_{1}}\]and \[{{\rho }_{2}}\] respectively, the planes of separation of the two liquids cuts off from the axis of the cone a fraction z of its length. Find z.   

A. \[{{\left( \frac{\rho +{{\sigma }_{2}}}{{{\sigma }_{1}}+{{\sigma }_{2}}} \right)}^{1/3}}\]
B. \[{{\left( \frac{\rho -{{\sigma }_{2}}}{{{\sigma }_{1}}-{{\sigma }_{2}}} \right)}^{1/3}}\]
C. \[{{\left( \frac{\rho -{{\sigma }_{2}}}{{{\sigma }_{1}}+{{\sigma }_{2}}} \right)}^{1/2}}\]
D. \[{{\left( \frac{\rho -{{\sigma }_{2}}}{{{\sigma }_{1}}-{{\sigma }_{2}}} \right)}^{1/2}}\]
Answer» C. \[{{\left( \frac{\rho -{{\sigma }_{2}}}{{{\sigma }_{1}}+{{\sigma }_{2}}} \right)}^{1/2}}\]


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