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• You’re lost in the world of dreams and sleep.（英语阅读理解）You’re lost in the world of dreams and sleep.You roll over,smiling as you come across a swimming pool filled with chocolate.And then,your wonderful dream becomes a nightmare when someone is screaming,“Get up!” It’s just what every teenager goes through each morning!Now,there seems to be one school that finally understands that requiring teens to show up at 9 am is not just cruel but also harmful to
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• A uniform solid sphere of mass M and radius R is placed on a ramp inclined at an angle θ to the horizontal.The coe\x0efficient of static friction between sphere and ramp is \x16μs.Find the maximum value of \x12 for which the sphere will roll without slipping,startingfrom rest,in terms of the other quantities.(Hint one:the moment of inertia of a sphere is 2/5MR2.Hint two:write the "no slip" condition as |acm|=Rα where acm is the linear acceleration of
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