Physics 9702 · AS & A Level · Atoms, nuclei and radiation

Atoms, nuclei and radiation — practice question

An alpha-particle possesses $2.2 \times 10^{-13}\,\text{J}$ of kinetic energy. What is the speed of the alpha-particle?

  • A$4.1 \times 10^{6}\,\text{m s}^{-1}$
  • B$5.8 \times 10^{6}\,\text{m s}^{-1}$
  • C$8.1 \times 10^{6}\,\text{m s}^{-1}$
  • D$1.2 \times 10^{7}\,\text{m s}^{-1}$

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