Which of these electronic display devices uses electrodes and polarized fluid to create numbers and characters?
A) VTF (Vacuum Tube Fluorescent) B) LCD (Liquid Crystal Display)
C) CRT (Cathode Ray Tube) D) LED (Light Emitting Diode)
B
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What does the differential amplifier detect?
What will be an ideal response?
Table 2.21 represents a “total analysis” of wastewater has been reported. Note that the pH is not given.
a. Do a charge balance analysis on the data to see if such a solution would be electrically neutral
b. If H+ and OH- are the only ions missing from the analysis, what must their concentration be? i.e. what is the pH and pOH?
What will be an ideal response?
Labor unions in the United States would like to see Congress pass “domestic content laws”
that would require, for example, that all automobiles sold in the United States contain at least a specified percentage of parts that were manufactured in the United States. Such laws would fall under the heading of
a. import tariffs. b. export tariffs. c. quotas. d. export restraint agreements. e. economic disincentives.
____ occur when air (or another medium) continuously circulates around in an enclosed space as it is heated and cooled.
A. Circulars B. Convective loops C. Enclosed loops D. Circular trails