Final answer:
The work done in turning the doorknob through 0.40 of a revolution is 0.13 J.
Step-by-step explanation:
In this case, we can use the formula for work in rotational motion to find the work done in turning the doorknob. The formula is given by:
Work = Torque * Angle
Since the question states that turning the doorknob through 0.40 of a revolution requires 0.13 J of work, we can calculate the torque by rearranging the formula:
Torque = Work / Angle = 0.13 J / 0.40 rev = 0.33 J/rev
Therefore, the work done in turning the doorknob is 0.13 J and the answer is True.