A block floats in water with exactly three-quarters of its volume below the surface

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

A block floats in water with exactly three-quarters of its volume below the surface. Which option correctly states the relation between the density of the block (ρblock\rho_{\text{block}}) and the density of water (ρwater\rho_{\text{water}})? (a) ρblock=ρwater\rho_{\text{block}}=\rho_{\text{water}} (b) ρblock=14 ρwater\rho_{\text{block}}=\dfrac{1}{4}\,\rho_{\text{water}} (c) ρblock=34 ρwater\rho_{\text{block}}=\dfrac{3}{4}\,\rho_{\text{water}} (d) ρblock=43 ρwater\rho_{\text{block}}=\dfrac{4}{3}\,\rho_{\text{water}}

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