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Two unequal blocks placed over each othe...

Two unequal blocks placed over each other of densities `sigma_(1)` and `sigma_(2)` are immersed in a fluid of density of `sigma`. The block of density `sigma_(1)` is fully submerged so that ratio of their masses is `1/2` and `sigma//sigma_(1)=2` and `sigma//sigma_(2)=0.5`. Find the degree of submergence of the upper block of density `sigma_(2)`.

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