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Question 4 18 pts A charge, q, of +6 micro-coulombs is located at x -o. y -8.5 cm, a charge q2 of -42 micro- coulombs is located at x O, y -2.8 cm, an unknown charge of qa. is located at x--5.4 cm, y o cm, and a charge, qa. -5 micro-coulombs is located at x - +15.4 cm. y- O cm. The direction of the total electric force on q, is 120.6 degrees from the +x axis, counter-clockwise. What is the unknown charge, qs, in micro-coulombs? If negative, include a negative sign in your answer.
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Answer #1

(o,8.5) --5시 3 02 -5.4, LS4)Tre mahitudc ofcharoes 22 : 424c = 42x10-C 5.4- 15.4 ll) Dueto 9, 42 14) 2 + (8.5-0)2 ] Xu-4 ニ 8-72 N The Distance bchulen two þoint CX,%) and(xLM) is d -15.) .5-°)1 - 360.41 Cm1 11o-15.4)2+ (-2.3-o)1 . 24S Cm Y34 2-1-5, 4-15-4)2 +(o·ji- 432,4 cm 2 Iii Due to 8.59 x lo9 x 42x lo-6 KSXlo-4 ヴ2千 77.06 N43264 142- Diecon ち4- Should be attractive C1.e toward ) f is 13 should be 4 -5 si HNe 8.1841.04h Fy 2 12.993 N 14.993 Fo C8. 184-1.64h = 구5구9.He Ty

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