1. The problem statement, all variables and given/known data Electrons from a heated cathode are accelerated through a potential difference of 25.0 V. Calculate the speed of the electrons escaping through a hole in the anode. 2. Relevant equations v = (2eV/m)^(1/2) 3. The attempt at a solution v = (2*25*1.759*10^11)^(1/2) = 2.97*10^6 m/s but this answer is wrong. why?