A proton is shot at 4 times 107 ms toward a gold atom with
A proton is shot at 4 × 107 m/s toward a gold atom, with a mass 197 times that of the proton and deflects it straight back with 90% of its initial speed. What is the recoil speed of the gold nucleus?
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a proton is shot at 4 times 107 ms toward a gold atom with a mass 197 times that of the proton and deflects it straight
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