B, on insulated stands, are each given a charge of +2.0 * 10^-6 coulomb. The distance between the spheres is 2.0 *10^-1 meter. Calculate the magnitude of the electrostatic force that the charge on sphere A exerts on the charge on sphere B

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block