An alpha particle mass 4 u experiences an elastic head-on
An alpha particle (mass 4 u) experiences an elastic head-on collision with a nucleus (mass 192 u) that is originally at rest. (The symbol u represents the atomic mass unit.) What fraction of its original kinetic energy does the alpha particle lose?
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an alpha particle mass 4 u experiences an elastic head-on collision with a nucleus mass 192 u that is originally at
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