1.

An alpha particle with kinetic energy 7.70 MeV collides with an ""^(14)N nucleus at rest, and the two transform into an ""^(17)O nucleus and a proton. The proton is emitted at 90^(@) to the direction of the incident alpha particle and has a kinetic energy of 4.44 MeV. The masses of the various particles are alpha particle, 4.002 60u, ""^(14)N, 14.003 07 u, proton, 1.007 875 u, and ""^(17)O, 16.999 14 u. In MeV, what are (a) the kinetic energy of the oxygen nucleus and (b) the Q of the reaction? (Hint: The speeds of the particles are much less than c.)

Answer»


ANSWER :`(a) ~~2.08MeV; (B) 2.05MeV`


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