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The figure shows wire $1$ in cross section; the wire is long and straight, carries a current of $4\mathrm{.}25$ mA out of the page, and is at distance $d_1=2\mathrm{.}54cm$ from a surface. Wire $2,$ which is parallel to wire $1$ and also long, is at horizontal distance $d_2=5\mathrm{.}19cm$ from wire $1$ and carries a current of $7\mathrm{.}11$ mA into the page. What is the $x$ component of the magnetic force per unit length on wire $2$ due to wire $1?$

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