Define area and give its SI unit

What caused magnetic fields? what happens if you keep breaking a magnet in two until you reach a single atom?

What property of a wave determines the pitch? what property of a wave determines the volume? describe your reasoning and include the ways the simulation and tone generator influenced your thinking.will mark brainiest if your answer does make sense to the question asked.

As more bulbs are added to a series circuit what happens to the resistance of the circuit