[Potironette]

Hmm..The electron exert a force of 1 to the right at A and the proton a force of 3 to the right at A. Then the proton's forced exerted at D would be 3*(1/9) or 1/3 to the right, while the electron would be 1 to the left so I made a mistake there and D should have a vector 2/3 to the left?
Err, why am I right about the repulsive force being 1/9 at D compared to A..? Did I miss something else?


Then for C, the proton should exert 3 to the left while the electron should exert 1*1/9 or just 1/9 to the right. So, for C it should actually be 3 - 1/9 to the left?
But then, that's what I did before too :/
But I also did think about the fact that the proton has 3x the charge of the electron.