A 2kg object is tied to a cord and swung in a horizontal circle of radius 1 m with a frequency of 1.333 Hz. What is the linear speed?

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What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.