1. Summarize the law of magnetic forces. 2. Why do magnets attract other non-magnetic materials? 3. What do you call a material that is attracted to a magnet or that can be magnetized? Give at least 2 examples of this type of material. What is responsible for the magnetic character of this material? 4. In terms of domain theory, explain why magnets can lose their strength over time. 5. In terms of domain theory, explain what happens to a magnet when it is dropped or heated up A current is running through a power line from west to cast. What is the direction of the magnetic field on the north and south sides of the wire? 7. Name the three most important common magnetic elements. 8. If you broke a magnet in two, would you have isolated north and south poles? Explain. 9. Describe how to use the right-hand rule to determine the polarity of an electromagnet. 10. Describe how to use the right-hand rule to determine the direction of force on a current- carrying wire placed in a magnetic field. 11. Is the magnetic pole in the northern hemisphere a N-pole or a S-pole? Explain 12. What is meant by magnetic declination? 13. What kind of field surrounds a stationary electric charge? A moving electric charge