5.4 Calculating Properties Of Solids !!install!! Jun 2026

A sintered alumina ceramic has $\rho_exp = 3.75$ g/cm³. Theoretical $\rho_th = 3.98$ g/cm³ (α-Al₂O₃). Find porosity. $$ P = \left(1 - \frac3.753.98\right) \times 100% = (1 - 0.9422) \times 100% \approx 5.78% $$

One of the most famous applications of these properties is . It explains why a heavy metal ship can float while a tiny coin sinks: 5.4 calculating properties of solids

⚠️ Watch out for the Slant Height ($l$) vs. the Actual Height ($h$) . A sintered alumina ceramic has $\rho_exp = 3

For porous solids, experimental density via Archimedes’ method (using buoyancy) is more accurate than geometric measurement. 5.4 calculating properties of solids