Electric field magnitude midway between 2 charges

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SUMMARY

The electric field magnitude midway between two charges, Q1 = 1 C and Q2 = 11 C, separated by 2 m, is calculated using the formula E = k(Q/r²). The user initially calculated the electric fields due to each charge separately, yielding 9E9 N/C for Q1 and 1.8E10 N/C for Q2. However, the correct approach requires considering the direction of the electric fields, leading to a net electric field of 1.35E10 N/C towards Q2, not simply adding the magnitudes.

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Homework Statement



What is the electric field magnitude midway between charges of Q1 = 1 C and Q2 = 11 C separated by 2 m?

Homework Equations


E= k (Q/r^2).



The Attempt at a Solution


9E9 x 1C / 1^2 = 9E9 N/C
9E9 x 2C / 1^2= 1.8E10 N/C.

What do I do from here? Any help would be much appreciated thanks!
 
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Would the answer be to add my two final values? I would have 2.7E10 N/C as my final answer... Does this look right?
 
That answer above proves to be not correct. What needs to be changed?!
 

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