A.eres(b.es)c.somos<span>d.son</span>
D=m÷v
so density would be 57.9 ÷ 3 = 19.3 g/cm³
Actually, alpha-particle is nothing but a "Nucleus of a Helium atom"
It is emitted by some radioactive substances, originally regarded as a ray
Hope this helps!
So you just need to find ways for you to magnitude it so you will probbaly have to magnitude this worksheet