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# HW 13 - HW 13 R e be cca P a tton P Y211,se ction001,S umme...

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6/9/13 HW 13 www.webassign.net/web/Student/Assignment-Responses/last?dep=5954614 1/5 Current Score : – / 19 Due : Tuesday, June 11 2013 11:59 PM EDT 1. –/3 points SerCP9 7.P.015. A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 251 m, and the car completes the turn in 30.0 s. (a) Determine the car's speed. m/s (b) What is the magnitude and direction of the acceleration when the car is at point B ? magnitude m/s 2 direction ° counterclockwise from the + x ­axis HW 13 (Homework) Rebecca Patton PY 211, section 001, Summer 1 2013 Instructor: Eli Owens Web Assign

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6/9/13 HW 13 www.webassign.net/web/Student/Assignment-Responses/last?dep=5954614 2/5 2. –/6 points SerCP9 7.P.017.soln. (a) What is the tangential acceleration of a bug on the rim of a 13.0 ­in.­diameter disk if the disk accelerates uniformly from rest to an angular speed of 79.0 rev/min in 4.60 s? m/s 2 (b) When the disk is at its final speed, what is the tangential velocity of the bug?
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