Physics Two pellets, each with a charge of 1.2 microcoulomb (1.2×10−6 C), are located 2.6 cm(2.6×10−2 m) apart. Find the electric force between them.

A hollow non-conducting spherical shell has inner radius R1 = 9 cm and outer radius R2 = 15 cm. A charge Q = -25 nC lies at the center of the shell. The shell carries a spherically symmetric charge density ρ = Ar for R1 < r < R2 that increases linearly with radius, where A = 17 μC/m4. What is the radial electric field at the point r = 2R2? Give your answer in units of kN/C.

Two charges, each 6 µC, are on the x axis, one at the origin and the other at x = 8 m. Find the electric field on the x axis at each of the following locations.   x = -2 m x = 2 m x = 6 m x = 10 m At what point on the x axis is the electric field zero?

Two very small spherical  metal objects, each with 1 coulomb of charge, are brought together in a vacuum so that the separation distance between their centers is 1 mm.  what is the force of repulsion between the two objects? (Coulombs constant is k= 9.0 x 10^9) . Answer is 9 x 10^15 N . Would like to see how that answer is gotten.

Two small identical conductors, one with a charge of 45 μC and the other with charge -81 μC are brought together so that they touch, then separated. If the force they exert on each other has a size of 0.7 N, how far apart are the two conductors? (in m)(a) 7.14 m(b) 14.29 m(c) 6.85 m(d) 2.04 m(e) 4.08 m

Two tiny conducting spheres are identical and carry charges of -27.1 μC and +42.0 μC. They are separated by a distance of 2.69 cm. (a) What is the magnitude of the force that each sphere experiences? (b) The spheres are brought into contact and then separated to a distance of 2.69 cm. Determine the magnitude of the force that each sphere now experiences.