Electric field - Finding the charges

AI Thread Summary
The discussion centers on calculating the magnitudes of two point charges, q1 and q2, given their separation and the acceleration of an electron placed equidistantly between them. The known values are q1 = 5.97x10-6 C and q2 = -5.97x10-6 C, but the method to derive these values is unclear to the original poster. Key equations for electric fields and forces are provided, including E=k(q/r²) and F=k(q/r²). The forces exerted by both charges on the electron must be analyzed, particularly their directions, to understand the resulting acceleration. Clarification on the calculation process is sought to bridge the gap in understanding.
rm_girl
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Homework Statement


Two point charges q1 and q2 are held 4.00cm apart. An electron released at a point that is equidistant from both charges, undergoes an initial acceleration of 8.05×1018m/s2 directly upward in the figure, parallel to the line connecting q1 and q2.

bhgg7a.png


Homework Equations


E=k(q/r2)
F=k(q/r2)
E=F/q


The Attempt at a Solution


I already know what the answers are.
q1 = 5.97x10-6 C
q2 = -5.97x10-6 C

I just have no idea how they got those answers. Could someone please explain?
 
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rm_girl said:

Homework Statement


Two point charges q1 and q2 are held 4.00cm apart. An electron released at a point that is equidistant from both charges, undergoes an initial acceleration of 8.05×1018m/s2 directly upward in the figure, parallel to the line connecting q1 and q2.

bhgg7a.png


Homework Equations


E=k(q/r2)
F=k(q/r2)
E=F/q



The Attempt at a Solution


I already know what the answers are.
q1 = 5.97x10-6 C
q2 = -5.97x10-6 C

I just have no idea how they got those answers. Could someone please explain?


Both charges exert some force on the electron. Draw the force vectors. What can you say about their direction?

ehild
 

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