The nuts on a collar are each tightened to 15 n-m torque. about 10% of this torque is used to overcome screw thread friction. the bolts have a minimal diameter of 8mm. the threads are a simple square cut with a pitch angle of 10degrees. the coefficient of friction in threads is 0.15. what is the approximate tensile force in each bolt

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

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Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.