Calculating Electric Field and Force Between Charged Rings

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The discussion focuses on calculating the electric field and force between two charged rings, with specific parameters provided, including their diameters and charges. The electric field at the midpoint is calculated using the formula E1, but the initial attempt yielded an incorrect result. Participants point out a potential error in matching the variables z and r in the equation to the problem's dimensions. Clarification on the correct values for z and r is requested to resolve the calculation issue. Accurate calculations are essential for determining the electric field and force at the specified location.
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Homework Statement


Two 10-cm-diameter charged rings face each other, 25cm apart. The left ring is charged to -17nC and the right ring is charged to +17nC .
A.What is the magnitude of the electric field E⃗ at the midpoint between the two rings?B.What is the magnitude of the force F⃗ on a -1.0 nC charge placed at the midpoint?
Express your answer to two significant figures and include the appropriate units.

Homework Equations


(E1)z=ZQ1/4πε0(z^2+r^2)^(3/2)

The Attempt at a Solution


((9E9)(.10)(-17E-9))/((.10)^2+(.50)^2)^3/2= 2.2E4.
Unfortunately
this is not the answer any help?
 
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You don't seem to have correctly matched up the z and r variables in the equation to the given numbers. What values for z and r have you used?
 

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