The attached figure shows a test charge q between the two positive charges. Find

Question

The attached figure shows a test charge q between the two positive charges. Find the force (in newtons) on the test charge for q = 1 ?C. Give a positive answer if the force is to the right and a negative answer if the force is to the left.

I got -47.5 I wasnt sure if I am supposed to subtract or add the electric fields.

Here is the follow up question:For the previous question, find the electric field (in newtons/coulomb) at the position of test charge. Again, supply a positive value if the electric field points to the right and a negative value if it points to the left.

For this I just got -4.75E7

Thank You for the Help!

Explanation / Answer

oh sorry i used k as boltzmann constant.it is 9*10^9 so i am getting -47.5 as my answer

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