Iron has a bcc structure at room temperature. When heated, it transforms from bcc to fcc at 1185/K. The atomic radii of iron atoms at this temperature are 0.126 and 0.129 nm for bcc and fcc, respectively. What is the percentage volume change upon transformation from bcc to fcc?
What will be an ideal response?
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A flanged pipe system component with a rubber section that allows for pipe expansion and contraction is a(n) _____.
a. expansion joint b. expansion loop c. thermal compensator d. isolinear converter
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Calculate the velocity of propagation, in meters, for a cable having a velocity factor of 86%.
Fill in the blank(s) with the appropriate word(s).
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The "brain" of the computer is the ________
A) CPU B) AD converter C) RAM D) PROM
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When using portable electric tools with metal cases, you should:
A) Always use a GFCI receptacle or GFCI adapter. B) Lubricate the tool plug before plugging it in. C) Use as long an extension cord as possible. D) Always make sure you are well grounded.
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