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a) $2.7 \mu \textrm{T}$
b)$5.3 \mu \textrm{T}$
c) They are opposite directions, but different magnitudes since they're due to different size currents
d)$1.1 \times 10^{-5} \textrm{N/m}$ The forces are equal since they are Newton's 3rd Law pairs.

Giancoli 6th Edition, Chapter 20, Problem 44

(6:33)

Chapter 20, Problem 44 is solved.

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