Two similar gold spheres are separated by a distance of
.34 m. The first sphere (A) has a charge of -4.0 x 10^-8C
and the second sphere (B) has a charge of -5.0 x 10^-13
C. If the electrostatic Force on B due to A is 2.5 N, what is
the magnitude of the electrostatic force on A due to B?

A.10.N

B.5.0 N

C.1.2 N

D.2.5 N

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0