The radioactive isotope ti-204 decays to pb-204 by emitting, Ask an Expert

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The radioactive isotope TI-204 decays to Pb-204 by emitting an electron. The electron may have a kinetic energy of up to 0.763 MeV.

a) find the velocity of an electron with this maximum KE, relative to c.
b) Find the momentum of the electron
c)To conserve momentum, the massive Pb-204 nucleus must recoil. Compute its velocity, relative to c. (Pb nucleus has a mass of 204 protons)

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