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college physics

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find the weight of a piece of wood with a density of .5 g/cm cubed. which when attached to a 5kg stone in water it will sink. the density of the stone is 3g/cm cubed

  • college physics -

    ok, when sinking

    weight of wood+weightstone=weight of waterdiaplaced

    MassWood*g+5g=densitywater(volume stone+volumewood)*g

    volumeWood=MassWood/.5g in cm^3

    volumestone=5000g/3g in Cm^3


    solve for mass wood.

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