Posted by Christina AAAA on Tuesday, April 14, 2009 at 11:46pm.
Physics - drwls, Wednesday, April 15, 2009 at 2:16am
If this were really a two-particle "explosion", then the recoil momentum of the 3He++ particle would be equal and opposite to that of the electron. One could use that fact and the mass to calculate the 3He++ velocity.
Actually, beta decay is a three-particle process, with a variable and often large part of the momentum carried away by an antineutrino. Whoever made up the question should be aware of that.
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