PHYSICS HEKLP ME

Question

Determine magnitude of the electric field at the point P shown in the figure(Figure 1). The two charges are separated by a distance of 2A  from the midpoint between them. Point P is on the perpendicular bisector of the line joining the charges, a distance 

 from the midpoint between them.

Express your answer in terms of Q, x , a, and k

Answer 1

The electric field due to a point charge is a vector quantity whose magnitude is k*q / r² , where k is Coulomb's constant, q is the charge, and r is the distance. By convention, a positive field is in the direction away from positive charge.

With 2 charged particles, the net field is the vector sum of the individual fields.

Steps:

Use the Pythagorean theorem and the trig formulas to get the distance from each charge to point P, and the angle of each vector.

Use trig formulas to get the horizontal and vertical components of each vector. Add these components to get the components of the vector sum

You can post a picture directly. First, scale it so that the longest dimension is no more that about 200 pixels, and save it as a jpeg. Then use copy and paste, or "drag and drop" to insert the picture