Main sequence stars, such as the Sun, are stable because of the energy released from fusion reactions in their core.
Describe what happens during the process of nuclear fusion.
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Markscheme
6.5 Uses and dangers of radioactivity Questions
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.