The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 144 kN. - Length of the specimen is 26 mm. - The yield strength is 71 kN/mm?. - The percentage of elongation is 44 %. Determine the following (1) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 18 kN, iv) Young's Modulus if the elongation is 1.2 mm at 18 kN and (v) Final diameter if the percentage of reduction in area is 26 %.

I want a step by step working out on how all these values were obtained and what table was used

Consider the solid model design of piston picture (a). You have been assigned a task to manufacturethis piston based on the following methods:-a. Sand Castingb. Any other manufacturing method of your own choicec. Draw the complete engineering-based comparison between the adopted method of your ownchoice and sand casting for manufacturing the piston. Your comparison must include theeffectiveness of manufacturing method, stresses-based analysis in manufacturing methods,product finishing, time laps for completing the product, cost effectiveness of methods, laborcost analysis.d. How can you measure the surface roughness of the piston surface highlighted in picture (b),based on your previous knowledge of manufacturing processes? You must have to mention theequipment by which you will measure its roughness and write the accuracy level. You mustdraw a valid reason for selecting that equipment.Take the dimensions of piston at your own but take more realistically.

Your mission is to design an oven that uses sunlight to cook people's food.

could you plz take a photo of the solution, the solution above isn't clear, the words are all put together so i can't quite get it.

Q1 (а) A tall standpipe as shown in Figure Q1(a) with an open top has an inner diameter 7 d=2.1 m and wall thickness t= 20 mm, Given the weight density of water y = 9.81 kN/m³ and water pressure is p = y h, calculate the height h of water that will produce a circumferential stress of 12 MPa in the wall of the standpipe. (i) (ii) Calculate the axial stress in the wall of the tank due to the water pressure.

what are the planning levels and their importance?

1. “The grain size of metal sheet influences its formability in two opposing ways. The yield strength of a metal increases as the grain size decreases. So, the formability of a component may decrease if the grain size gets too small. Larger grained metals have better formability, but the roughened surface that results from stretching metal with grain sizes that are too large is unacceptable for many applications. During a recrystallization anneal new grains form in the metal. The final grain size depends on the annealing temperature and annealing time.” As shown in the figure below (1"x1" area under a 50Xmagnification microscope), a cold-rolled metal has been annealed at 550 degrees C for one hour. Calculate the ASTM Grain Size Number for the following condition: image attached