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6 Radioactivity

6 Radioactivity

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Question 49

In a commercial nuclear fission reactor, uranium-235 nuclei undergo fission to release energy. During a specific operating interval, the total nuclear energy released by these fission reactions is 1.35 × 1011 J.

This energy, EEE, is produced by the conversion of a small amount of mass, Δm\Delta mΔm, according to the mass-energy equivalence equation:

E=Δmc2 E = \Delta m c^2 E=Δmc2

where c c\,c represents the speed of light, 3.0 × 108 m/s.

Calculate the mass defect (the decrease in mass), Δm\Delta mΔm, that corresponds to this energy release. Show your working.

[3]
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6 Radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6 Radioactivity

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