Differentiate between accuracy and precision
Accuracy refers to how well the experimental value agrees with the true or exact
value. Precision refers to the degree of reproducibility of a measurement, that is, to
the maximum possible variations in of the actual measurements taken. Both may be
expressed as a plus/minus correction value or as a percentage.
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Which of the following processes would be the most likely process for making continuous-fiber composite material for a Formula 1 race car chassis?
(a) Resin transfer molding (b) Vacuum bagging (c) Pultrusion (d) Filament winding
A beam of light travels a distance of 2900 m. How much time does it take?
A) 9.7 s B) 9.7 ms C) 9.7 ?s D) 9.7 ns E) 9.7 ps
Of the elements in your body, the only one not formed in stars is
A) hydrogen. B) calcium. C) carbon. D) iron. E) oxygen.
Classify the following as element, compound, or mixture, and justify your classifications: table salt, stainless steel, table sugar, aluminum, ice
A) mixture; element; compound; element; element B) compound; mixture; compound element; compound C) mixture; compound; mixture; element; compound D) compound; element; compound; element; compound