Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

An ice block in the shape of a cylinder has cross-sectional area $12\,\text{m}^2$ and is floating in the sea, with part of it below the surface. The sea water has density $1020\,\text{kg m}^{-3}$. A polar bear with mass $400\,\text{kg}$ climbs onto the ice block. As a result, the block moves downward by a vertical distance $d$. What is the value of $d$?

  • A$3.3\,\text{mm}$
  • B$3.3\,\text{cm}$
  • C$0.32\,\text{m}$
  • D$3.1\,\text{m}$

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