Homework Answers
force on A
F = force due to B - force due to C
F = (uo/ 4pi) 2 i^2* L ( 1/ rab - 1/rac)
F = 10^-7* 2* 15^2*4*( 1 /5 - 1 / 7.5)* 10^3
F = 0.012 N
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