please just the answers no working needed

1)

Two protons are maintained at a separation of 991 nm. Calculate the electric potential due to the two particles at the midpoint between them. Then, find the magnitude and direction of the electric field there. potential: V magnitude of field: N/C The direction of field is O toward one of the protons. O another direction. O undetermined.A dipole is composed of a pair of point charges it]. separated by a distance d and aligned parallel with the xaxis, as shown in the gure. Find the expression for the potential V on the xaxis at point F located at x : 6.90 x 10'3 cm, where x :3: d. Then, evaluate the potential for a dipole moment of p = 6.2] x 103" C-m. The Coulomb force constant is k = \"(43159) = 3.99 x 10 N-mZJ'CZ. rxI "i\" ' +9 9-3 IdI The voltage across a membrane forming a cell wall is 80.0 m V and the membrane is 8.50 nm thick. What is the electric field strength? You may assume a uniform electric field. Question Credit: OpenStax College Physics electric field strength: V/mSuppose that the electric potential V in a certain region is given by V = Ax2 - Bx + C where A = 2.55 V/m , B = 3.65 V/m, and C = 7.65 V. Find the magnitude of the electric field E at the point x = 1.35 m. E = V/mSuppose that the electric potential V in a certain region is given by V (x, y, Z) = Ax - B(12 - z2) where A and B are constants. Find expressions for the components of the electric field in this region. Ex = Ey = E, =For a single. isolated point charge carrying a charge of q = 6.87 x 10\" C, one equipotential surface consists of a sphere of radius r. : 0.0294 In centered on the point charge as shown in the gure. What is the potential on this surface? Now consider an additional equipotential surface that is separated by 13.9I V from the previously mentioned surface. How far from the point charge should this surface be? This surface must also meet the condition of being farther from the point charge than the original equipotential surface. distance from point charge: In In building a particle accelerator, you manage to produce a uniform electric field of magnitude 6.53 x 10 N/C in one 35.5 cm section. Calculate the magnitude of the electric potential difference across the length of the accelerator's section. electric potential difference: V How much work is required to move a proton through the section? work