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- ou have a summer job as an assistant technician for a telephone company in California.During a recent earthquake, a 1.0-mile long underground telephone line is crushed atsome point. This telephone line is made up of two parallel copper wires of the samediameter and same length, which are normally not connected. At the place where theline is crushed, the two wires make contact. Your boss wants you to find this placeso that the wire can be dug up and fixed. You disconnect the line from the telephonesystem by disconnecting both wires of the line at both ends. You then go to one end ofthe line and connect one terminal of a 6.0-V battery to one wire, and the other terminalof the battery to one terminal of an ammeter. When the other terminal of the ammeteris connected to the other wire, the ammeter shows that the current through the wire is1.0 A. You then disconnect everything and travel to the other end of the telephone line,where you repeat the process and find a current of 1/3 A.vo An electron at point A as shown in the figure has a speed th - 2.2 x 10° m/s. The distance between points A and Bis given as / 8 cm. kg and ge C, respectively.) 31 19 (Mass and charge of the electron are m, = 9.109 x 10 = 1.602 x 10 B) Find the time, in units.of nanoseconds required for the electron to move from A to B. Answer:The figure (Fig. 1) shows a long cylindrical capacitor consists of a solid conducting core with radius ri = 4 mmand outer hollow conducting tube with an inner radius of r2 = 31 mmThe length of the capacitor is L = 27 cmFigure 2 is the cross sectional view of the system. This system of rod and shell is connected to a voltage source of emf E = 9.2 voltsThere is no dielectric material present in the system as of now. PartI a)Calculate the capacitance of this capacitor. capacitance Give your answer up to at least three significance digits. b)Say the inner rod is negativelycharged. Given this, calculate the charge density of the outer surface. And show how the electric field lines are oriented in this system. Hint: you can use the cross section for this (Fig. 2). charge density of the outer surface Give your answer up to at least three significance digits.
- The compressor on an air conditioner draws89.6 A when it starts up. The start-up time isabout 0.282 s.How much charge passes a cross-sectionalarea of the circuit in this time?Answer in units of C.O File C:/Users/danie/Downloads/Exam%202%... ☆ EApps Analysis of Not Wa... YouTube A Maps M Gmail EReading list Exam 2 Practic... 5 / 6 100% Ans. C 12. Two point charges are separated by 1.00 × 10² m. One charge is -2.8 x 10-8 C; and the other is +2.8 x 10-8 C. The points A and B are located 2.5 × 10³ m from the lower and upper point charges as shown. If an electron, which has a charge of 1.60 × 10-19 C, is moved from rest at A to rest at B, what is the change in electric potential energy of the electron? O +2.8 x 10-8 C 0.0025 m • B 0.0050 m •A 0.0025 m L0 -2.8 x 10 8 C A) +4.3 x 10 15 J 2 Type here to search DELL 个 III4.0om TOne+4.00C - Recloyle 3.0cm what is the ret eectric Brce on chorge 93 due to clorges 9,ond qz, (Direchion ond mapni) O what is the net electric for ce on charge 9 due to chorpes 9,and 9.-10.0µC 93-3.00 C Direction ond mainitude) Owhat is the ret electric field on 93? point P due to clarpes q,92,0nd93 (Dinection and mganitnde)
- A charged belt, 55 cm wide, travels at 33 m/s between a source of charge and a sphere. The belt carries charge into the sphere at a rate corresponding to 87 µA. Compute the surface charge density on the belt.33. Parts (a) through (e) of this problem should be done by inspection-that is, mentally. The intent is to obtain an approximate solution without a lengthy series of calcula- tions. For the network in Fig. 102: a. What is the approximate value of I1, considering the magnitude of the parallel elements? b. What is the ratio I¡/I2? Based on the result of part (a), what is an approximate value of 12? c. What is the ratio I/I3? Based on the result, what is an approximate value of I3? d. What is the ratio I/I4? Based on the result, what is an approximate value of I4? e. What is the effect of the parallel 100 kN resistor on the above calculations? How much smaller will the current I4 be than the current I¡? f. Calculate the current through the 1 2 resistor using the current divider rule. How does it compare to the result of part (a)? g. Calculate the current through the 10 2 resistor. How does it compare to the result of part (b)? h. Calculate the current through the 1 kn resistor. How does…1 %VY li, M home work .pdf H.W: In the Boher model of the hydrogen atom an electron moves at 2.19*10'm/s in an orbit of radius 5.29 10" centered on a proton. (a)what is the centripetal force on the electron? (b)what is the number of revolutions made each second? Ans. (a)9.06 10"m/s (b= 6.58 + 1015 1/s
- K.38 Given the electric field E» ê 24 (vim) tind the electric potentiel of point A with respect to point 3 where A is at +2m ond B a+ -um, both on the 2 axis , Tuius d uniform 200 m long conductor a voltage A Cross -sectin hos drap of 8 V bertween its ends. If the current flowing through it is a edensity ef the (A Im?), idortidy the materiel the conductor. CS CamScanner ile tarandıYou have a summer job as an assistant technician for a telephone company in California.During a recent earthquake, a 1.0-mile long underground telephone line is crushed atsome point. This telephone line is made up of two parallel copper wires of the samediameter and same length, which are normally not connected. At the place where theline is crushed, the two wires make contact. Your boss wants you to find this placeso that the wire can be dug up and fixed. You disconnect the line from the telephonesystem by disconnecting both wires of the line at both ends. You then go to one end ofthe line and connect one terminal of a 6.0-V battery to one wire, and the other terminalof the battery to one terminal of an ammeter. When the other terminal of the ammeteris connected to the other wire, the ammeter shows that the current through the wire is1.0 A. You then disconnect everything and travel to the other end of the telephone line,where you repeat the process and find a current of 1/3 A(a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a negatively charged Van de Graff terminal? (b) What is unreasonable about this result? (c) Which assumptions are responsible?