A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51 cm. What is the magnitude of the total electric field produced by both charges exactly halfway between the two charges? Answer in MN/C (divide answer by 1x106 to convert to MN/C).

Question

A charge, q1,  of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface.  The total flux through the surface is -9.2 x 106 (N m2)/C.  These charges are now placed on the x axis.  q1 is placed at x = 0, and q2 is placed at x = +114.51 cm.  What is the magnitude of the total electric field produced by both charges exactly halfway between the two charges?  Answer in MN/C (divide answer by 1x106 to convert to MN/C).