Which physical quantity in a nuclear reaction is considered equivalent to the Q- value of the reaction?
The conservation of energy, between the initial and final energy of a nuclear process ({displaystyle E_{ ext{i}}=E_{ ext{f}}}
), enables the general definition of Q based on the mass–energy equivalence. For any radioactive particle decay, the kinetic energy difference will be given by
{displaystyle Q=K_{ ext{f}}-K_{ ext{i}}=(m_{ ext{i}}-m_{ ext{f}})c^{2}}
So, kinetic energy is the physical quantity in a nuclear reaction is considered equivalent to the Q- value of the reaction.
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