238 kg kg, A uranium nucleus U may stay in one piece for billions of years, but sooner or later it de- cays into an a particle

Question

238
kg
kg,
A uranium nucleus U may stay in one piece
for billions of years, but sooner or later it de-
cays into an a particle of mass 6.64 x 107
and 234Th nucleus of mass 3.88 x 107
and the decay process itself is extremely fast
(it takes about 10-20 s). Suppose the uranium
nucleus was at rest just before the decay.
If the a particle is emitted at a speed of
6.67 x 106 m/s, what would be the recoil speed
of the thorium nucleus?
Answer in units of m/s.

Kunduz · Accepted Answer

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