1. Why might the wingspans of birds be a consideration in determining the spacing between parallel wires on power poles? 2. Since every iron atom is a tiny magnet, why aren’t all things made of iron...

1. Why might the wingspans of birds be a consideration in determining the spacing between parallel wires on power poles?

2. Since every iron atom is a tiny magnet, why aren’t all things made of iron also magnets?

3. What surrounds a stationary electric charge? A moving electric charge?