Physics 0625 · IGCSE · Stars and the Universe

Stars and the Universe — practice question

The Earth is $3.0 \times 10^{20}\,\text{km}$ away from a galaxy. At what speed is the galaxy receding from the Earth?

  • A660 km/s
  • B6600 km/s
  • C660 m/s
  • D6600 m/s

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