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Particle A carrying a charge of 8.0 nC is at the origin of a Cartesian coordinate system. Ch 25 HW - Part 2 roblem 25.29 2 of 10> Part A Constants Periodic Table What is the electrostatic potential (relative to zero potential at infinity) at a position 4.0 m from the origin? Particle A carrying a charge of 8.0 nC is at the origin of a Cartesian coordinate system. Express your answer with the appropriate units. LA Value Units V- SubmitP Incorrect Try Again; 5 attempts remaining Part B With particle A held in place at the origin, how much work must be done by an outside agent to bring particle B also carrying a 8.0-nC charge, from in finity to 4.0 m? Express your answer with the appropriate units. W-1 Value Units Submit st Ans ? Part C Particle B is returned to infinity, and particle A is moved to r 4.0 m and held there. How much work must be done by an outside agent to bring particle B from infinity to the origin? Express your answer with the appropriate units. LA W-1 Value Units Submit uest Answer Provide Feedback Next> Solution V = kQ/R V = (9 x 10^9 x 8 x 10^-9)/4 = 18 Volts Hence, V = 18 V The amount of work required to be done will be: W = q V W = 8 x 10^-9 x 18 = 14.4 x 10^-8 J Hence, W = 14.4 x 10^-8 J The potential at origin will be: Vo = kq/r = 18 V ; W = q V = 14.4 x 10^-8 J W = 14.4 x 10^-8 J .

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