Consider an electric field = 2x - 3y . the coordinates x and y are measured in meters and the electric field is in n/c. what is the magnitude of the flux of this field through a square whose corners are located at

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.