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A net torque of $5.2\ N \cdot \ m$ is applied to a disk that has a rotational inertia of $1.2\ kg \text{ } m^2$ for $3.4s$.

If the disk starts at rest, what is the final angular momentum of the disk?

A

$0.35\ kg \text{ }m^2/s$

B

$1.84\ kg \text{ }m^2/s$

C

$14.7\ kg \text{ }m^2/s$

D

$17.7\ kg \text{ }m^2/s$

E

$21.2\ kg \text{ }m^2/s$

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