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Unit 1: Thermal, nuclear and electrical physics

Quick questions on Nuclear fission and fusion (QCE Physics Unit 1)

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Define binding energy per nucleon and identify the element with the maximum value. [2 marks]
What is q2?
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A fission event releases Δm=0.215 u\Delta m = 0.215 \text{ u}. Calculate the energy released in MeV and in joules. (1 u=931.5 MeV1 \text{ u} = 931.5 \text{ MeV}).
What is q3?
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Compare the energy release per kilogram of fuel in fission of 235U^{235}\text{U} and fusion of deuterium-tritium. (a) Calculate energy per kilogram for 235U^{235}\text{U} (200 MeV per nucleus200 \text{ MeV per nucleus}). (b) Calculate energy per kilogram for D-T (17.6 MeV per nucleus, average nucleus mass 2.5 u17.6 \text{ MeV per nucleus, average nucleus mass } 2.5 \text{ u}).

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