The nucleus of an atom of radium mass 377 x 10-25 kg
The nucleus of an atom of radium (mass 3.77 X 10-25 kg) suddenly ejects an alpha particle (mass 6.68 X 10-27 kg) of an energy of 7.26 X 10-16 J. What is the velocity of recoil of the nucleus? What is the kinetic energy of the recoil?
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the nucleus of an atom of radium mass 377 x 10-25 kg suddenly ejects an alpha particle mass 668 x 10-27 kg of an energy
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