PROBLEM 3.136 A 3000-lb · in. torque is applied to a 6-ft-long steel angle with an L4 × 4 × 3/8 cross section. From Appendix C we find that the thickness of the section is 3/8 in. and that its area is 2.86 in2. Knowing that G = 11.2 × 106 psi, determine (a) the maximum shearing stress along line a-a, (b) the angle of twist.
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The Free Soil party of 1848 harbored many northerners who stood squarely against slavery in the territories primarily on the grounds that
A. further expansion of slavery might break up the union. B. it destroyed the chances of free white workers to rise up from wage-earning dependence. C. slavery was a moral evil contrary to American principles. D. slave labor would be unproductive in the West. E. the southern fire-eaters were already planning further expansion into Central America.
Who did Britain transfer authority over Palestine to in 1947 in hope of finding a solution to rising tensions there between Arabs and Jews?
a. Syria and Egypt b. the United Nations c. the United States d. Turkey
What turns on and off the cooling fan on most vehicles today?
What will be an ideal response?
In a synchronous motor, a large amount of excitation current will cause there to be a power factor that goes in the __________ direction.
A. leading B. lagging