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Two charged Q1 = 7.2MC and Q2 = 8.3MC are placed on a semi- circle with a radius R = 49mm as shown in the

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Two charged Q1 = 7.2MC and Q2 = 8.3MC are placed on a semi- circle with a radius R = 49mm as shown in the figure below. How much work is required to bring a thir charge @3 = 4.3MC from infinity to point P? Please take k = 9.0x10' N. m2/C2 and express your answer using two decimal places in units of J or N.m. Q2 - R Q1 - - - R P

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