My Notes Ask Your Teacher 3, 0/1 points ! Previous Answers OSColPhys2016 31.3.P.

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My Notes Ask Your Teacher 3, 0/1 points ! Previous Answers OSColPhys2016 31.3.P.015. what is the ratio of the velocity of a 4.05 Mev ray to that of an particle with the same kinetic energy? This should confirm that relativity is taken into consideration. (Assume 1 u931.5 MeV/c) YB travel much faster than as, even when = 2.817.10.8 Additional Materials Reading 4. + -/1 points OSCIPhys2016 3 1.4.P022. My Notes Ask Your Teacher Write the complete decay equation for the given nuclide in the complete X notation. Refer to the periodic table for values of Z chemPad Help Greek Additional Materials Reading

Explanation / Answer

given  

beta ray and alpha particle

and kinetic energy of beta ray is = 4.05 MeV

and k.e = 0.5*mv^2

we know that the mass of beta particle is mb = 1.67*10^-27 kg

and mass of alpha particle is ma = 6.6446572*10^-27 kg

both having same kinetic energy

equating the kinetic energies

0.5*mb*vb^2 = 0.5*ma*va^2

Vb/Va = sqrt(ma/mb) = sqrt(6.6446572*10^-27/1.67*10^-27) = 1.994

vb = 2*va

so the beta rays travel much faster than alpha particles

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