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4 marksNuclear Energy

CSEC Physics · May/June 2019 · Paper 2 · Question 6(c)

The change in mass in a nuclear reaction is 0.2014 u. Given u = 1.66 × 10⁻²⁷ kg and c = 3.0 × 10⁸ ms⁻².

Calculate the energy given off in a nuclear reaction if the change in mass is 0.2014 u.

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Other parts of this question

  1. 6(a)(i)Use the information given above to determine the number of protons and neutrons present in an atom of lithium-7.[2 marks]
  2. 6(a)(ii)Draw a clearly labelled diagram of the structure of the lithium-7 atom.[4 marks]
  3. 6(b)(i)Define the term 'half-life'.[2 marks]
  4. 6(b)(ii)Calculate the half-life of lithium.[3 marks]

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