Ice has density \rhoi = 920\text{kg/m}^3; sea water has \rhow = 1025\text{kg/m}^3. What fraction of an iceberg's volume is <strongabove</strong water?

About 10\% Floating: V{\text{sub}}/V = \rhoi/\rhow = 920/1025 \approx 0.90. Above water: 1 - 0.90 \approx 0.10, so about 10\%.

Fluids and Newton's Laws (Buoyancy)

AP Physics 1· difficulty 3/5

\rho_i = 920~\text{kg/m}^3

Explanation

V_{\text{sub}}/V = \rho_i/\rho_w = 920/1025 \approx 0.90

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