A block cedar has a mass of 200 kg and density of 570 what fraction of the wood will be surface of block is floating in water

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  1. assume you mean what fraction of the VOLUME is under water
    density = 570 kg/m^3 where water is 1000 kg/m^3
    mass of wood = 570 * volume = 200
    mass of water displaced = 1000 * volume under water
    1000 * volume under water = 200 = 570 * volume
    volume under water/volume = 0.570

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