Answer
$560\space turns$
Work Step by Step
We know that
$N=\frac{\epsilon_{max}}{BA\omega}$
We plug in the known values to obtain:
$N=\frac{170}{(0.050)(0.016)(3600rev/min)}(\frac{rev}{2\pi rad})(\frac{60s}{min})$
$N=560\space turns$
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