Question

In the form of radioactive decay known as alpha decay, an unstable nucleus emits a helium-atom nucleus, which is called an alpha particle. An alpha particle contains two protons and two neutrons, thus having mass m=4u and charge q=2e. Suppose a uranium nucleus with 92 protons decays into thorium, with 90 protons, and an alpha particle. The alpha particle is initially moving at velocity= 5.89 *10^8, and the radius of alpha particle is r=3.1* 10^ -11.What is the speed of the alpha particle when it is detected (velocity final) in the laboratory? Assume the thorium nucleus remains at rest

Answer 1

There is no unit of every data.We have to calculate the speed of alpha particle