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A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.78 x 10 4 rad/s to an angular speed

A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.78 x 104 rad/s to an angular speed of 4.58 x 104 rad/s. In the process, the bit turns through 1.99 x 104 rad. Assuming a constant angular acceleration, how long would it take the bit to reach its maximum speed of 9.41 x 104 rad/s, starting from rest?

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