What is the mass of an `alpha`-particle ?

What is the charge on alpha -particles ?

Define alpha - decay and show that kinetic energy of an alpha -particle is (m_yQ)/(m_y+ m_alpha') , Where the symbols have their usual meaning.

A neutron, a proton, an electron and an alpha particle enter a region of constant magnetic field with equal velocities. The magnetic field is along the inward normal to the plane of paper. The tracks of the particles are labelled in Fig. SAQ 11. which of the tracks show the path of the electron and alpha-particles ?

What is the size of colloidal particles ?

What is alpha particle?

What are alpha -particles?

The nucleus of an atom of ._(92)Y^(235) initially at rest decays by emitting an alpha particle. The binding energy per nucleon of parent and dougther nuclei are 7.8MeV and 7.835MeV respectively and that of alpha particles is 7.07MeV//"nucleon". Assuming the dougther nucleus to be formed in the unexcited state and neglecting its share of energy in the reaction, calculate speed of emitted alpha particle. Take mass of alpha particle to be 6.68xx10^(-27)kg .