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Solve the all parts of following problem:

Problem: Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be quite high- many times higher than the wind speed. Typical modern turbines have blades 56m long and spin at 13rpm.

Part A: At the tip of the blade what is the speed?

Part B: At the tip of the blade what is the centripetal acceleration?

Any help I can get on this problem is greatly appreciated! I'm not too familiar with this problem.

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