Draw the octahedral shape with the atoms shown that surrounds the interstitial site at ½, 1, ½ in the BCC metal structure. You will have to put two unit cells side by side to show this.
What will be an ideal response?
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Which of the following things is an “extended object”? For each item, answer “A” if the item is an acceptable extended object, “B” if the definition of an extended object applies badly to the item, and “D” if it is debatable.
(a) An electron (b) An atom (c) A rock (d) A swarm of bees (e) The earth’s atmosphere (f) The water in an ocean current (g) Sugar molecules dissolved in a cup of water (h) The vacuum between galaxies
Ideal incompressible fluid flows through a 4.0-cm-diameter pipe at 1.0 m/s. There is a 2.0 cm diameter constriction in the line. What is the speed of the fluid in this constriction?
A) 0.25 m/s B) 0.50 m/s C) 2.0 m/s D) 4.0 m/s
Which of the following is an "irreversible" process?
A) A block of wood sliding to a stop along a tabletop. B) A perfectly elastic ball that falls and rebounds from the floor back to its initial height. C) Both of the above. D) Neither of the above.
The process by which raindrops are formed by the collision of droplets is called ______________
Fill in the blank(s) with correct word