a 400g cubic block of wood floats with 40% of its volume submerged. how much weight should be placed on the wood to cause it to just become fully sumberged
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The displaced volume has an equal weight of the object. Thus: by dividing the less dense object by the denser fluid displaced, the percentage volume of the object that is submerged, which is equal to the volume of displaced water, is determined. Subtracting 100 from this give the percentage that floats.
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