Physics

Problem

Three solid blocks, each of volume

50\,\text{cm}^3

, have masses

30\,\text{g}

(Block P),

45\,\text{g}

(Block Q) and

60\,\text{g}

(Block R) respectively. They are gently lowered into a liquid of density

0.8\,\text{g\,cm}^{-3}

. Which statement correctly describes their behaviour? a) Blocks P and Q float; Block R sinks b) Only Block P floats; Blocks Q and R sink c) Block P floats; Block Q remains suspended in the liquid; Block R sinks d) All three blocks float

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