Homework Statement
a helium nucleus (charge =2e, mass = 6.63E-27 kg) traveling at a speed of 6.20E5 m/s enters an electric field, traveling from point A, at a potential of 1.5E3 V, to point B, at 4.0E3 V. what is the speed at point B?
Homework Equations
charge = 2e = 2 * 1.6E-19 C
delta V is...