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6. Answer each question in one or two complete sentences, mathematical expressions and diagrams as necessary. Make certain you explain your logic. Answers without clear work receive no credit. 1 Nm2 _. q AV =k=9X109;=E k;F=qE;V=k; =E; 41mg C2 r2 7' A11 & _7T_m. _. itoqxr _,_[,t_01dl'XFl = _ .. 4175+ 1 x 10 A '=dB 4H r3 'd 4T[ r3 '3 41tz3 ,p _ [A e = 1.6 X 10'19;me = 9.11 x 10 31kg ; mp = 1.67 X 10 27kg (15) A bar magnet with magnetic dipole moment, ,u, has a value of 0.54 Amz. It lies on the negative x axis, as shown in the gure below. A compass is located at the origin. Magnetic north is in the negative 2 direction. The distance from the center of the bar magnet to the center ofthe compass is 22.5 cm. Between the bar magnet and the compass is a coil of wire of radius 3.5 cm, connected to batteries not shown. The distance from the center of the coil to the center of the compass is 9.7 cm. A steady current of 0.96 A runs through the coil. Conventional current runs clockwise in the coil when viewed from the location of the compass. With both the bar magnet and the coil, the magnet still points north. A) which pole of the bar magnet is closest to the compass? Explain. B) What is the magnetic eld at the compass? Explain. C) How many turns of wire are in the coil? Explain. Magnet -h Coil Compass X To batteries