Created by StemPy LabOnly a very small share of the alpha particles in the Geiger and Marsden experiment turned through large angles. This shows that
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← In a photoelectric experiment the frequency of the light is doubled. It was above the threshold before. What happens to the stopping potential?Iron has 26 protons in its nucleus. A 5.2 MeV alpha particle runs head-on into an iron nucleus. How near to the centre of the nucleus does it come before it stops? Use e²/4πε₀ = 1.44 MeV fm. →
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