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Evaluating weight from mass of displaced water

A log of wood is floating in water with 40% of its volume above the surface of the water. if the volume of the log is 0.4 m^3, find the mass of the log.

a. 200kg
b. 240 kg
c. 160 kg
d. 16 kg

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The mass of the block equals the mass of the displaced water. The volume of ...

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The easy and step by step answer.