## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

The turbine coasts to a stop from 3800 rpm. During this time, the average angular speed is $\frac{3800~rpm+0}{2}$ which is 1900 rpm. We can find the number of revolutions the turbine rotates through as it stops; $\theta = (1900~rpm)(10~min) = 19000~rev$ The turbine rotates through 19000 revolutions as it coasts to a stop.