Posted by Anonymous on .
A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the xaxis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at various points along the xaxis.
(a)What is E(x) (in N/C) for x=76.5 m ?

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Writeacher,
If you really want the help of an expert in this subject, you'll follow directions and put the SUBJECT in the School Subject box.

ibnozohr 
Ken,
Ibn Zohr is a university in Morocco. which school you attend is of no interest on this forum. All we do is help students, so just the subject please. :)