A charged nonconducting rod, with a length of 2.00 m and a cross-sectional area of 4.00

Chapter 21, Problem 51

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A charged nonconducting rod, with a length of 2.00 m and a cross-sectional area of 4.00 cm2 , lies along the positive side of an x axis with one end at the origin. The volume charge density r is charge per unit volume in coulombs per cubic meter. How many excess electrons are on the rod if r is (a) uniform, with a value of 4.00 mC/m3 , and (b) nonuniform, with a value given by r bx2 , where b 2.00 mC/m5 ?

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