Hey
so i had a doubt in Q.3
to calculate the kinetic energy they use 1.66
i just dont get why?
3 A stationary nucleus of mass 220u undergoes radioactive decay to produce a nucleus D of
mass 216u and an ?-particle of mass 4u, as illustrated in Fig. 3.1.
The initial kinetic energy of the ?-particle is 1.0 × 10–12 J.
(b) (i) Show that the initial speed of the ?-particle is 1.7 × 107 m s–1.
help, please?