3. Three metal bars, labeled 1, 2, and 3, are marked A and B on either end as shown. A A student makes the following observations: • end 1B repels end 3A B B end 1A attracts end 2B Bar 2 Bar 3 end 2B attracts end 3B Consider the following classes of objects: bisit orang ad • Class I: Magnets. • Class II: Objects attracted to magnets but not repelled. • Class III: Objects that are neither attracted or repelled to class I or II objects. a. To which of the classes listed above, could bar 1 belong? Explain your reasoning and the characteristics that define each of your classes. b. To which of the classes listed above could bar 2 belong? Explain your reasoning. c. Would end 2A attract, repel, or neither attract nor repel end 3A if the two ends were brought near one another? If it is not possible to tell for certain, what are the possibilities? Explain. B Bar 1 A

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.