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A proton (mass 1 u) is shot toward an unknown target nucleus at a speed of...

A proton (mass 1 u) is shot toward an unknown target nucleus at a speed of 2.40×106 m/s . The proton rebounds with its speed reduced by 25%while the target nucleus acquires a speed of 2.63×105 m/s .

What is the mass, in atomic mass units, of the target nucleus?

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Mass of the proton m-1u Initial speed of the proton v 24x10 mis Final speed of the nucleus va,- 2.63x103 m/s rom law of conse

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