Answer
The magnitude of the angular momentum is $~~0.53~kg~m^2/s$
Work Step by Step
We can find the magnitude of the angular momentum:
$L = \tau~t$
$L = (16~N\cdot m)(33\times 10^{-3}~s)$
$L = 0.53~kg~m^2/s$
The magnitude of the angular momentum is $~~0.53~kg~m^2/s$.