First, slowly move the magnet into the shorter coil of wire (the coil near the top). What happens to the voltage when the magnetic field lines that are closer together (at the North and South Poles) move through the wire, compared to when the middle of the magnet moves through the coil

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.

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.