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2006-11-19 16:22:31 · 1 answers · asked by Anonymous in Science & Mathematics Physics

1 answers

Very close to the mass of a proton. It is about 1.6749 x 10^-27 kg, 1 u, or 939.57 MeV/c^2.

2006-11-19 16:25:12 · answer #1 · answered by msi_cord 7 · 1 0

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