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How far below the surface of a body of liquid is it necessary to immerse the upper edge of a vertical surface , 1 m square , two edges of which are horizontal, so that the eccentricity of the hydrostatic force on one face of it will be 2.50 cm?

include your free body diagram.

a.2.52 m

b.2.83 m

c.4.12 m

d.3.21 m

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