Two point charges of equal magnitude are 8.3 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 51 N/C. Find the magnitude of the charges.

Two point charges of 8.85 x 10° C are situated in a Cartesian coordinate system. One charge is at the origin while the other is at (0.72, 0) m. What is the magnitude of the net electric field at the location (0, 0.77) m?

An electric field of magnitude 5.25 ✕ 105 N/C points due north at a certain location. Find the magnitude and direction of the force on a −6.15 μC  charge at this location. magnitude        direction

Three charges are located as shown in the figure, with values q1 = 3.1 × 10-16 C, q2 = -1.8 × 10-16 C, q3 = 5.75 × 10-16 C. The charges are separated by d1 = 2.7 × 10-6 m and d2 = 1.5 × 10-6 m.  Part (a)  What is the force of q2 on q1 in the x direction, Fx? Give your answer in newtons, and recall k = 8.988 × 109 N m2/C2.  What is the force of q3 on q1 in the y direction, Fy? Give your answer in newtons.