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[" A wire of length "L" is placed along ...

[" A wire of length "L" is placed along "x" &axis "],[" with one end at the origin.The linear charge "],[" density of the wire varies with "],[" Q."" distance "x" from the origin as "lambda=lambda_(0)((x^(3))/(L))" ."],[" Where "varnothing_(0)" is a positive constant.The total "],[" charge "Q" on the rod is "]

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