Recent content by kazukamikaze

Based off what one of my classmates told me, the field at the two points should be equal. The only way I can rationalize these answer is by taking the sum of the three plates. I'm just confused as to why this is done.

Homework Statement Three parallel, infinite, insulating planes (sheets) of charge are arranged as shown (see attached image). Note carefully the charge desnitties and distances given. From left to right the charge densities are -3σ, +σ, +σ. How does the magnitude of the electric field at point...