Two point charges of 9μC and 4μC are placed a distance of 4 m apart. a. Calculate the magnitude of the force, in Newtons, on a positive 5μC charge at the midpoint between the two charges.

b. Find the point, measured in meters from the 9μC charge, between the two charges where the force on the 5μC charge is 0?

If forces acting on an object are unbalanced. true or false

Difference between series and parallel circuits

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r