Physics 5054 · O Level · Density

Density — practice question

A student measures the density of a small rock. The weight of the small rock is $1.2\,\text{N}$. She adds $100\,\text{cm}^3$ of water to a measuring cylinder. She then lowers the rock carefully into the $100\,\text{cm}^3$ of water. The measuring cylinder now reads $147\,\text{cm}^3$. What is the density of the rock?

  • A$0.026\,\text{N}/\text{cm}^3$
  • B$0.83\,\text{g}/\text{cm}^3$
  • C$1.8\,\text{N}/\text{cm}^3$
  • D$2.6\,\text{g}/\text{cm}^3$

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