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What is class 2 air permeability? A 75Hp 440v 900rpm y-conn sync motor 60hz effective resistance 0.15ohm and xs of 2ohm p/p. power factor 0.8 leading, torque angle and Pd? What is the simplified form of (2√5 + 3)(√5 -1)? How is homeostasis restored after drinking caffeine? Is it true that sin^2(x) * sin(x) = sin^3(x) ?