Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

A technical article on diesel engines gives the energy available from diesel fuel in two forms: $41.8\,\text{MJ kg}^{-1}$ and $34.9\,\text{GJ m}^{-3}$. What is the density of diesel fuel?

  • A$8.35 \times 10^2\,\text{kg m}^{-3}$
  • B$1.20 \times 10^3\,\text{kg m}^{-3}$
  • C$8.35 \times 10^5\,\text{kg m}^{-3}$
  • D$1.20 \times 10^6\,\text{kg m}^{-3}$

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