What is the net force on this charge?

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To determine the net force on a charge, it is essential to list the relevant equations related to electrostatics, such as Coulomb's law. Participants are encouraged to demonstrate their approach to the problem by providing their calculations and reasoning. This allows for more effective guidance and tutorial support from others in the forum. Engaging with the problem-solving process is crucial for understanding the concepts involved. Providing a clear attempt at a solution is necessary for receiving constructive feedback.
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Homework Statement
A square of side length √(2D) has charge +Q on three of the corners and charge -Q on the bottom right corner. A charge +q is placed at the exact centre of the square. What is the net force on this charge?
Relevant Equations
Coulomb's Law
ch19q30.jpg
 
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