the magnitude $($in $\backslash (\backslash$mathrm$\{$N$\}\backslash$cdot $\backslash$mathrm$\{$m$\}\backslash ))$ and direction of the torque on the loop?

magnitude $0.-\backslash (\backslash$mathrm$\{$N$\}\backslash$cdot $\backslash$mathrm$\{$m$\}\backslash )$

direction

clockwise about an east$/$west axis as seen from east of the loop

$($b$)$ Does this device have any practical applications as a motor?

Yes, this principle is the basis for many practical devices, such as electric motors. In electric motors, torque generated by current$-$carrying loops in magnetic fields is used to produce rotational motion, which can then perform mechanical work.

Score: $0\mathrm{.}34$ out of $0\mathrm{.}34$

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