A cubical block of wood \( 10 \mathrm{~cm} \) on a side floats at the interface between oil and ...

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A cubical block of wood \( 10 \mathrm{~cm} \) on a side floats at the interface between oil and water with its lower surface horizontal and \( 4 \mathrm{~cm} \) below the interface. The density of oil is
\( P \) \( 0.6 \mathrm{~g} \mathrm{~cm}^{-1} \). The mass of block is
(A) \( 706 \mathrm{~g} \) (B) \( \quad 607 \mathrm{~g} \)
W.
(C) \( 760 \mathrm{~g} \) (D)
\( 670 \mathrm{~g} \)
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