Hi, got some homework to do in electromagnetism and one of the problems is: 1. The problem statement, all variables and given/known data Consider a Cartesian coordinate system with charges Q (Q = 15μC) at x = + and – 1.3cm, and at y = + 1.7cm and – 0.7cm and at z = + 2cm and -0.5cm. Calculate the flux of the electrostatic field through the surface of a sphere of radius 3cm, centered at the origin. Equations: Gauss law. Coulomb law Attempts: I dont really know the right way to start this problem. The only thing I done is placed the charges in a cartesian coordinate system. I thought of calculating all the electric fields to get the resultant electric field. and from there on I have no idea how to continue. Not asking here for a complete solution of the problem, but maybe a hint on how to start.