The electrons in a particle beam each ha...

The electrons in a particle beam each have a kinetic energy of `1.6 xx 10^(-17)J`. What are the magnitude and direction of the electric field that stops these electrons in a distance of 10.0cm

`10^(3)` v/m in the direction of velocity of electrons

`10^(3)` v/m positive direction of velocity of electrons

`10^(3) v//m` perpendicular to velocity of electrons

`10^(6) v//m` perpendicular to velocity of electrons

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