In the image below there exists a square 3 cm on each side with different points and charges. On q1 exists a charge equal to +2 uC and q2 exists a charge equal to -2 uC. a) Calculate the electric field vector at point a? b) What is the force on the charge as a q3 charge of-3 uC is positioned at a, and the amount of work to move it to point b? c) What is electric potential at points a and b?

Q 3 please

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Electric Potential Energy A +3.0-nC charge Q is initially at rest a distance of 10 cm (r1) from a +5.0-nC charge q fixed at the origin. Naturally, the Coulomb force accelerates Q away from q, eventually reaching 15 cm (r2).   What is the work done by the electric field between r1r1 and r2r2? How much kinetic energy does Q have at r2r2?   My question is about the image attached. The part in the equation circled in blue is positive, and the part circled in red is negative. Can you explain how that negative sign appeared?

Good morning, could you help me with this problem?Thank you very much in advance.Using the superposition principle a) determine the electric potential generated by the set of charges at the point (0,2), Q1=100 C and Q2=50 C. b) The electric potential energy if a charge of 30 C is added at point X. See figure.

x = 12.0 cm y = 4.00 cm 1. To calculate the potential energy of the system of the three point-charge system, the appropriate equation to use is       2. Calculate the potential energy of the system of the three point-charge system. 3. To calculate the electric potential at the upper right corner of the rectangle in the Figure, the appropriate equation to use is 4. Calculate the electric potential at the upper right corner of the rectangle (the corner without a charge

A charge -78 pC is placed at the origin and a charge 32 pC is placed at a distance of 5 cm from the origin on the x-axis. Find the location from the origin where the net electric potential is zero. Distance from the origin =? What is the potential energy of a charge 58 μμC placed at a distance of 0 cm from the origin on the x-axis

In the following figure, a charge q1 = 4.0 × 10-7 C is located at y = 8.0 m. A second charge q2 = 3.0×10-7 C is located at x = 5.0 m. %3D a) Find the x and y components of the electric field at (0,0). b) Find the electric potential at (0,0) c) Find the x and y components of the force on a particle with a charge q3 = -2.0 × 10-7 C if it is placed at (0,0). у (m) 8 92 x (m)

A) Find the electric potential at point P in the figure B) Suppose the three charges shown in the figure are held in place. A fourth charge, with a charge of +5.32 μC and a mass of 5.23 g, is released from rest at point P. What is the speed of the fourth charge when it has moved infinitely far away from the other three charges?

Q 1 and Q 2 please