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Physics, 21.08.2019 02:20, maddy121209
In the presence of a nucleus the energy of a y-ray photon can be converted into an electron-positron pair. calculate the minimum energy for this to occur and thus the frequency of such a photon. hint: use e = mc2.]
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In the presence of a nucleus the energy of a y-ray photon can be converted into an electron-positron...
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