An -particle (charge =

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

\alpha

-particle (charge =

+2e

, mass =

6.64\times10^{-27}\,\text{kg}

) is projected towards a metal plate that is at a potential

1.2\,\text{kV}

higher than the point of projection. Determine the minimum initial speed required for the

\alpha

-particle just to reach the plate.