Andy has a bath and uses 1500g of water heated from 10°c to 40°c and with a specific heat capacity of 4200j/kg°c how much energy does he use

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

How does an observation about an object differ from an inference about that object

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87