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Homework Statement
A photon of momentum P strikes a nucleus at rest and s absorbed. If The final (excited)
nucleus is M calculate its velocity.
Homework Equations
p = mv/(gamma)
The Attempt at a Solution
P = Mv/gammaP^2 - (Pv/c)^2 = (M^2)(v^2)
P^2 = (Mv)^2 + (Pv/c)^2
V = P / sqrt( (M^2) + ((P^2)/(C^2)) )The answer in the back is
P(C^2) / sqrt((M^4)(C^2) + P(C^2))