A layer of oil with density 800 kg/m^3 floats on of water with density 1000 kg/m^3. A block floats at the oil-water interface with 1/4 of its volume in oil and 3/4 of its volume in water. What is the density of the block.

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Let the volume of the block be V and the density D. The mass of the block is D*V.

In an oil-water interface with oil having a density of 800 kg/m^3 floating on water with a density of 1000 kg/m^3, the block floats such that 1/4th of its volume is in oil and 3/4th is in water. When an object is...

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