Electric field of point charges

AI Thread Summary
A 4 microCoulomb point charge is located at the origin, with two additional charges, q1 and q2, positioned on the x-axis at 30 cm and 50 cm, respectively. The objective is to determine the magnitudes and signs of q1 and q2 such that the net force on all three charges is zero. The user attempted to use the force equation F = kqQ/r² to establish relationships between the charges but feels stuck. They are seeking assistance with their calculations to identify any errors. The discussion emphasizes the need for detailed calculations to facilitate effective help.
dh743
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Homework Statement


A 4microC point charge is placed at the coordinate origin. Two other point charges are placed on the x axis: q1 at x=30cm and q2 at x=50cm. Find the magnitude and sign of q1 and q2 if the net force on each of the three charges is zero.


Homework Equations


E=\frac{kq}{r<sup>2</sup>}


The Attempt at a Solution


I tried using F=\frac{kqQ}{r<sup>2</sup>} to find the relationship between the points (i.e. let one equal the other) but I'm basically just completely stumped on this one so any help is greatly appreciated.
 
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hi dh743! :smile:

(try using the X2 and X2 icons just above the Reply box :wink:)

show us your full calculations, and then we'll see what went wrong, and we'll know how to help :smile:
 

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