Two aluminum wires have the same resistance. If one has twice the length of the other, what is the ratio of the diameter
of the longer wire to the diameter of the shorter wire?

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