a uniform disk is rotating about a stationary acis at its center. the initial angular speed of the disk is 28 rad/s. then a torque is aplied and the disks dlows down. the disks comes to rest 5 seconds after the torque is applied. how many revoluation did the disk turn through before stopping

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Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?