Wire 1 has a resistance r1. wire 2 is made of the same material, with length 1/2 as long and diameter 1/4. what is the resistance ratio r2/r1?

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

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

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =