Inside the core of an experimental tokamak fusion reactor, hydrogen isotopes undergo nuclear fusion at temperatures exceeding 150 million degrees Celsius.
Explain, in terms of nuclei, mass, and energy, the fundamental physical process of nuclear fusion that occurs under these extreme conditions.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.