Anonconducting solid sphere of radius 11.6 cm has a uniform volume charge density. the magnitude of the electric field at 23.2 cm from the sphere's center is 1.89 103 n/c.

(a) what is the sphere's volume charge density? µc/m3

(b) find the magnitude of the electric field at a distance of 5.00 cm from the sphere's center. n/c

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.