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Distance Between Particles and Energy in Positronium

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Positronium is an atom composed of an electron and a positron (mp = me, Q = +e). Calculate the distance between the particles and the energy of the lowest energy state of positronium. Hint: the reduced mass µ of the two particles equals me/(1 + me/m).
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Word file with the calculations for finding the distance at the lowest energy state of positronium.

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