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4. Using the data in Probs. 1 and 2, calculate the a-disintegration energies for 212 Po and 210 Po. Calculate the kinetic energies and velocities of the recoil nuclei in the two cases. What percentages of the disintegration energies in each case are shared by A-particle and the recoil nucleus ?
1.212 Po -particles have kinetic energy of 8.776 MeV. Assuming the mass of the q-particles to be 6.67 x 10-27 kg, calculate their velocity. (2.05 x 10 m/s) 2. 210Po Q-particles having a kinetic energy of 5.3 MeV, are subjected to a nagnetic field of 1 T. What is the radius of curvature of their tracks? The charge on the a-particles is 3.2 x 10-"c. (0.333 m) 10