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Radioactivity (A-level only)

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Question 36

In a conceptual nuclear fusion reactor, the total mass of the reacting fuel decreases at a rate of 1.8×10−5 kg hour−11.8 \times 10^{-5} \text{ kg hour}^{-1}1.8×10−5 kg hour−1 due to fusion reactions.

What is the maximum electrical power output of this reactor, assuming 100% efficiency in converting the released mass-energy into electrical energy?

A

19 MW19 \text{ MW}19 MW

B

450 MW450 \text{ MW}450 MW

C

27 000 MW27\,000 \text{ MW}27000 MW

D

1.6×106 MW1.6 \times 10^6 \text{ MW}1.6×106 MW

Markscheme

Radioactivity (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Radioactivity (A-level only)

128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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