Cascade systems use at least two compressors and have completely isolated refrigeration loops that may contain a mixture of refrigerants.
Answer the following statement true (T) or false (F)
True
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A robot is powered with a 9.6V battery with a 2400 mA-hr rating for 10 minutes. We want to replace the battery with a capacitor that can be charged to 20V. The minimum capacitance that works equals ____(xx.x) F.
Fill in the blank(s) with the appropriate word(s).
Under normal working conditions, support for the strands of a wire rope is provided by the _____.
a. sheath b. core c. wire d. coating
Why weren’t plants the first form of life to appear on earth?
What will be an ideal response?
The article “Calibration of an FTIR Spectrometer”describes the use of a spectrometer to make five measurements of the carbon content (in ppm) of a certain silicon wafer whose true carbon content was known to be 1.1447 ppm. The measurements were 1.0730, 1.0825, 1.0711, 1.0870, and 1.0979.
a. Is it possible to estimate the uncertainty in these measurements? If so, estimate it. If not, explain why not. b. Is it possible to estimate the bias in these measurements? If so, estimate it. If not, explain why not.