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Q. A wheel of diameter 5.8 cm has a 4.0-m cord wrapped around its periphery. Starting from rest, the wheel is given a constant angular acceleration of 4.9 rad/s2. How much time it will take for the cord to unwind?

Q. A man weighing 710 and a woman weighing 430 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman?

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