Charge Q = +4.00 mC is distributed uniformly over the volume of an insulating sphere that has radius R = 5.00 cm. What is the potential difference between the center of the sphere and the surface of the sphere?

E7BP6

An ionized nitrogen molecule (N₂+) at point A has charge +e and moves at 1.92 × 10³ m/s in the positive x-direction. A constant electric force in the negative x-direction slows the molecule to a stop at point B, a distance of 0.796 mm past A on the > 2 axis. Calculate the x-component of the electric field and the potential difference between points A and B. (The mass of a nitrogen molecule is 4.65 x 107 kg and the fundamental charge is e = 1.60 × 10−¹9 C.) -26 HINT (a) the x-component of the electric field (in V/m) 672.96482 X V/m (b) the potential difference between points A and B (in V) V

A rod of length L = 0.65 m is placed along the x-axis with its center at the origin. The rod has a non-uniform linear charge density of λ = k|x| C/m, where k = 5.15E-12 C/m2 is a constant factor. What is the value of the potential at the point (0, yob) in volts if yob = 4.5 m?