Which of the following correctly compares the uses of line graphs versus pie charts? line graphs show patterns in data with variables that change over time; whereas, pie charts show data as parts out of a whole (such as out of 100%). line graphs show data as parts out of a whole (such as out of 100%) within a category; whereas, pie charts show data having two or more different categories. line graphs show data involved in distinct categories that do not overlap; whereas, pie charts show data as parts out of a whole (such as out of 100%). line graphs show data involved in distinct categories that do not overlap; whereas, pie charts show patterns in data with variables that change over time.

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