Where does the negative charge come from?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?