18. What is the difference between nearsightedness and farsightedness?
((Is that just for regular sight, or is there another term I'm not recognizing?))
((LINKS FOR ALL THE QUESTIONS BELOW, PLEASE!))
19. Describe how an electromagnet works and give an example.
20. In the figure shown above, how could you determine the wavelength?
21. If the current in a wire is at 0.5 A and the voltage is measured at 100 volts, what is the resistance in the wire? Show all work and include the proper units?
22. What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts? Show work and include all units.
23. What is the electromagnetic spectrum? Explain and give an example?
24. How are sound waves produced, and what impacts do different types of matter have on the speed of the wave?
7 answers
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difference between nearsightedness and farsightedness
electromagnet
etc.
Where does it say, "I want links." ???