Please help me idk what dis

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

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

Sound is a disturbance that travels through a medium as a