A block of wood of mass 108 kilogram and density 442 x 102, Ask an Expert

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A block of wood of mass 10.8 kilogram and density 4.42 x 102 kg/m³, floats on water.

(a) Find the minimum amount of aluminum (density 2.70 x 103 kg/m³) that can be located on top of the wood block and cause the block of wood and the aluminum to sink?

(b) If instead it was a block of ice of mass 10.8 kilogram and density 8.90 x 102 kg/m³. Find the minimum amount of aluminum that can be located on top of the ice block and cause the block of ice and the aluminum to sink?

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