Jesse wants to know how well a particular brand of car wax protects his car from dirt. which of the following is a variable that must be kept constant?
a. the use of the car wax
b. how dirty the car gets
c. the kind of car

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