By definition, it is equal to the amount of kinetic energy gained by a single unbound electron when it accelerates through an electrostatic potential difference of one volt. (from Wiki)
Oh, my tutor told me to divide...
Is it because 1 Volt = 1 Joule/1 Coulomb
There for Joules = V * C...
Homework Statement
Calculate the veolcity of a proton of energy 0.12 keV
proton mass = 1.7 x 10^-27
Homework Equations
The Attempt at a Solution
I thought...
0.12 keV = 120 eV
120/1.60 x 10^-19 = 7.5 x 10^20 J
E = 0.5mv^2
sqrt(2E/m) = v
but I'm getting something to x 10^23 so its...