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A rectangular parallelepiped with a square base

d = 0.260 m

on a side and a height

h = 0.120 m

has a mass

m = 6.60 kg.

While this object is floating in water, oil with a mass density

?_o = 710 kg/m³

is carefully poured on top of the water until the situation looks like that shown in the figure. Determine the height of the parallelepiped in the water.

oil
ho
h
hw
water

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