A CD Has a Diameter of 12

question 68

Multiple Choice

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant angular velocity of 20.0 radians per seconds,then the period of the rotational motion is

• A) 0.143 s.
• B) 0.224 s.
• C) 0.314 s.
• D) 0.421 s.
• E) 0.558 s.

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