A steel bar of rectangular cross section (a 5 38 mm, b 5 50 mm) carries a tensile load P. The allowable stresses in tension and shear are 100 MPa and 48 MPa, respectively. The maximum permissible load Pmax is approximately:
(A) 56 kN
(B) 62 kN
(C) 74 kN
(D) 91 kN
(D) 91 kN
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What is one relationship of superconductors to magnets?
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The division of the geological history of the Earth into sets of distinct intervals is referred to as the geological
A) time scale B) record C) spectrum D) ladder
Other planetary systems are detected by a "wobbling" of the star as a consequence of ______________ effects of a planet
Fill in the blank(s) with correct word
The variables m1 and m2 that appear in the equation F = Gm1m2/r2 are
a. the straight-line distance between the centers of each object. b. the rate at which each object is moving. c. the mass of each object. d. the diameter of each object.