Which of the following is the best example of a material-oriented industry? a) Refining copper-bearing rock (copper ore) into pure copper wire. b) Working in a restaurant. c) Building houses. d) Making compact electronics like cell phones

Measurements should be reported to the nearest 1000, 100, 10, 1, 0.1, 0.01,0.001 units, etc., depending on their variability and intended use. Using your best judgment, how should the following measurements be reported?a. Deformation of a steel specimen during the tension test (mm)b. Tensile strength of steel (MPa)c. Modulus of elasticity of aluminum (MPa)d. Weight of aggregate in a sieve analysis test (grams)e. Compressive strength of portland cement concrete (MPa)f. Moisture content in a concrete masonry unit (percent)g. Asphalt content in hot-mix asphalt (percent)h. Specific gravity of woodi. Distance between New York City and Los Angeles (km)j. Dimensions of a computer microchip (mm)

34 If the following diagram represents the sintering of the ceramic MgO, what could the curves x and y refer to? increase in property X 1000 1200 1600 sintering temperature (°C) (A) = grain size; y porosity (B) x grain size; y = strength O(C) x porosity; y-grain size 1400 O (D) x strength; y grain size 1800