Question

1. A uranium-238 nucleus, initially at rest, emits an alpha
particle with a speed of 1.4 x 10^7m/s. Calculate the
recoil speed of the residual nucleus thorium-234. Assume
that the mass of a nucleus is proportional to the mass
number.​

Answer 1

Use law of conservation of momentum and total Energy

Answer 2

As uranium 238 nucleus emits a α particle with a speed of 1.4 × 107m/sec. Let v2 be the speed of the residual nucleus thorium 234. Mark as brainliest If helps