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Aeighme
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Homework Statement
A radium isotope decays to a radon isotope by emitting an α particle (a helium nucleus) according to the decay scheme 226Ra --> 222Rn + 4He. The masses of the atoms are 226.0254 u (226Ra), 222.0176 u (222Rn), and 4.0026 u (4He). What is the total kinetic energy of the decay products (in MeV)?
Homework Equations
E0=mc2
E=gamma*mc2
K=gamma*mc2-mc2
E=K+E0
1u=931.494 (MeV)/c2
The Attempt at a Solution
I really don't know what to do for this...