The most commonly used code for bridges, buildings, and other structural steel is ____________________.
Fill in the blank(s) with the appropriate word(s).
AWS D1.1
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Describe some of the characteristics that make the following processes irreversible:
(a) liquid water at 1 atm being heated and vaporized to steam at 1 atm and 200oC; (b) carbon dioxide gas being mixed with nitrogen gas; (c) a ball rolling down an inclined plane; (d) air escaping a popped balloon. What will be an ideal response?
Images composed of mathematically defined shapes created by illustration programs are known as:
a. computer graphics b. web imagery c. online art d. vector graphics
Industrial plasma cutting units can cut carbon steel up to _____
a. 1" thick b. 3" thick c. 5" thick d. 7" thick
Nitrogen enters a steady-state process at T = 150 K and P = 0.1 MPa. A compressor increases the pressure to 0.4 MPa, and is followed by a heat exchanger. A second compressor increases the pressure to 2 MPa and feeds into a second heat exchanger. Each heat exchanger lowers the temperature isobarically to 150 K. If each compressor is adiabatic and has an efficiency of 80 %, determine the TOTAL work added per kilogram of nitrogen and the TOTAL heat removed per kilogram of nitrogen. Use Figure 2-3 for data.
A. +192 kJ/kg; -210 kJ/kg B. +298 kJ/kg; -4556 kJ/kg C. +154 kJ/kg; -172 kJ/kg D. +192 kJ/kg; -172 kJ/kg E. Insufficient information to solve