Nosheen

In order to look like you are educated and you care about important things, you go to a place that sells books by the foot (these places actually exist; specify the color of books you want, and they send them to you). When your order is delivered, you nd...

Two point charges q1=4uc& q2=9uc are placed 20cm apart.the electric field due to them will be zero on the line joining them at a distance of