An 34-kg person puts on a life jacket, jumps into the water, and floats. The jacket has a volume of 2.7 10-2 m3 and is completely submerged under the water. The volume of the person's body that is under water is 6.3 10-2 m3. What is the density of the life jacket

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.