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A certain CD has a playing time of 80 minutes. When the music starts, the CD...

A certain CD has a playing time of 80 minutes. When the music starts, the CD is rotating at an angular speed of 4.60×1024.60×102 revolutions per minute (rpm). At the end of the music, the CD is rotating at 2.20×1022.20×102 rpm. Find the magnitude of the average angular acceleration of the CD. Express your answer in rad/s².

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