Problem 1.55 In the structure shown, an 8-mm-diameter pin is used at A, and 12-mm-diameter pins are used at B and D. Knowing that the ultimate shearing stress is 100 MPa at all connections and that the ultimate normal stress is 250 MPa in each of the two links joining B and D, determine the allowable load P if an overall factor of safety of 3.0 is desired.
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_____ brought the bald eagle perilously close to extinction
a. Market hunting b. Avian disease c. DDT d. Wolves
Unlike the oxyfuel process, the air carbon arc cutting process ____.
A. requires that the base metal be reactive with the cutting stream B. can only be performed on metals that can be rapidly oxidized by the cutting stream C. can not be performed on metals that can be rapidly oxidized by the cutting stream D. does not require that the base metal be reactive with the cutting stream
Originating in Africa, the ____________________ dairy goat is truly a miniature dairy goat.
Fill in the blank(s) with the appropriate word(s).
A solder pot is part of a ____.
A. one-time fuse B. resettable circuit breaker C. time-delay fuse D. plumber's tool kit