A sample of dry coarse-grained material of mass 1 kg was shaken through a nest of sieves and the following results were obtained: Opening (mm) Mass Retained Sieve no. (grams) 4 10 20 40 4.75 2.00 0.85 0.425 0.15 0.075 45 235 160 350 180 30 100 200 Pan

If the specimen is originally square and has dimensions of a = 4 in., b = 3 in., and a thickness of t = 0.4 in., determine its new dimension a' after the load is applied. Express your answer to six significant figures and include appropriate units. a' = 4.00737 μA Submit Previous Answers Request Answer Part B X Incorrect; Try Again; 5 attempts remaining 0 in Determine its new dimension b' after the load is applied. Express your answer to six significant figures and include appropriate units. μᾶ b= 3.00333 ? in Submit Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining

Question 17) The following measurements were recorded during compression test on two specimens: Mild steel and Cast Iron. The width and thickness of the specimen before the test are given in the table below (every dimension was measured three times) Cross-Section Dimensions (mm) Steel Cast Iron Measure #1 w= 12.66, t=12.67 w= 12.67, t=12.67 Measure #2 w= 12.67, t-12.67 w= 12.66, t=12.65 Measure #3 w- 12.68, t-12.67 w- 12.64, t-12.67 Calculate the average width (w) and thickness (t) in mm of both mild steel and cast- iron respectively. The order is w, t (mild steel), w, t (cast-iron) (Use two decimal places. do not add units, e.g. 10.02) With reference to data in question 17, what is the original cross section areas (Ao) of the mild steel and cast-iron respectively. (Use two decimal places, without units, e.g., 120.52)