It equals the moment of inertia times the angular velocity.
The magnitude of one form of this vector is equal to h-bar times the square root of the product of the orbital quantum number and that quantum number plus one. The time derivative of this quantity is (*) torque. It equals the moment of inertia times the angular velocity. It can be found by taking the cross-product of the radius and the linear momentum. For 10 points, name this quantity from mechanics denoted L, which is the rotational analog of linear momentum.
The magnitude of one form of this vector is equal to h-bar times the square root of the product of the orbital quantum number and that quantum number plus one.
{angular momentum} [prompt on {L} before it is read; do not accept or prompt on "momentum"]