1. The problem statement, all variables and given/known data I am the the 10th grade science fair, and my project is over electromagnets. It is which of the following factors affects the strength of an electromagnet the most. I then use some like voltage of power source, diameter of core, thickness of wire, and # of coils. Could you guys give me all the materials that I would need, where to buy them and cost? Could you give me ideas as to how to make this project extraordinary? I know I am asking a lot, but my project is due soon, I am under stress from my other homework, and I am just afraid that I will do this wrong. Please give any kind of feedback. 2. Relevant equations None 3. The attempt at a solution I can't go to store because dad is always at work. I really don't know what materials would make this project a good one.