Physicshard · Past Paper
A piece of wood floats in water with 1/4th of its volume above the surface. The density of wood is:
A250 kg/m³
B750 kg/m³
C500 kg/m³
D1000 kg/m³
✓ Correct Answer: B — 750 kg/m³
Submerged volume is 3/4. Density = (3/4) * Density of water = 0.75 * 1000 = 750 kg/m³.
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