Charges placed in right triangle pls HELP

[sunny.heyar]

Homework Statement

Charges q1, q2, q3 are placed in a right triangle.
Charges are given, distance between charges is given.
Find the electrical field strength at point "A" which is in the middle of the hypotenuse.
Which equations and how would I figure that out knowing that I have to give magnitude and direction?

Homework Equations

E=kq/r^2 --> ?not sure

The Attempt at a Solution

I drew out a diagram and found all the angle, after that I am completely lost.

 

[rl.bhat]

In a right angled triangle, mid point of the hypotenuse is equidistant from three vertexes.
At A, two fields are in the opposite direction due to two charges at the ends of the hypotenuse. Find the resultant of these two. You can find the angle between the resultant of the two field and third field,and resultant of all the three fields.

 

[nlightner]

I would approach this problem by using the equation E=kq/r^2, where E is the electric field strength, k is the Coulomb's constant, q is the charge, and r is the distance between the charges. In this case, we have three charges placed in a right triangle, so we can use the Pythagorean theorem to find the distance between the two charges on the hypotenuse.

Once we have the distance, we can plug in the values for the charges and the distance into the equation to find the electric field strength at point A. However, since there are three charges, we need to take into account the direction of the electric field. To do this, we can use vector addition to find the net electric field at point A.

Another approach would be to use the concept of superposition, where we can find the electric field at point A by considering the individual electric fields produced by each charge and adding them together. This would involve using the equation E=kq/r^2 for each charge and then using vector addition to find the net electric field at point A.

Overall, the key equations to use in this problem would be the equation for electric field strength and the Pythagorean theorem. Additionally, it is important to consider the direction of the electric field and use vector addition or the principle of superposition to find the net electric field at point A.