Answer:
Speed of the alpha particle is [tex]v=1.8180\times 10^3m/sec[/tex]
Explanation:
We have given charge on alpha particle [tex]q=3.2\times 10^{-19}C[/tex]
Mass of the alpha particle [tex]m=6.68\times 10^{-27}kg[/tex]
Potential difference [tex]V=-3.45\times 10^{-3}volt[/tex]
We have to find the speed of the alpha particle
From energy conservation we know that
[tex]\frac{1}{2}mv^2=qV[/tex]
[tex]\frac{1}{2}\times 6.68\times 10^{-27}\times v^2=3.2\times 10^{-19}\times 3.45\times 10^{-3}[/tex]
[tex]v=1.8180\times 10^3m/sec[/tex]
