T= (1000 -689)*g*V =311 *9.8*V = 0.99
V = 3.25x10^-4 m^3
the water level drops, because part of wood is above the water.
V = 325 cm^2
the volume of wood above the water 325*(1-0.689) = 101.1 cm^3
so the the change in water level is
101.1/65 = 1.56 cm
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