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Exercise 21.31 robe of charge with longth 200 cm long the with a mora 20. Is charge per length is +630 nC/m. Ama sphere with
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Anst sinA= 2 lo 102452 5 سيعمل f r m²/C² + q We know that E = KX (@sine) where K = 9x109Nim? A = +6.30nC/m. M=5cm = 0.05 m =-So, F= 2.028x103 x 2x10-6 - 4.057 x 103N b) 90° counter clockwise from tk axis

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