Three geological formations overlie one another with the characteristics shown in Figure above. A constant-velocity vertical flow tield exists across the three formations. The hydraulic head is hel= 8 mat the top of the formations and he2= 2 mat the bottom, use data in table below (Aquifer H (m) k (m/day 0.026 9. 0.0072 7. 0.0065 15 Calculate the average vertical hydraulic -1 ?(conductivity (m/day Calculate the velocity through the entire -2 ? (system (m/day Calculate the hydraulic head at point A-3 ? ((green point Kv= 0.026000 , V= 0.001655 , hA = A O 6.137931 Kv= 0.008549 , V= 0.001325 , hA = BO 9.741935 Kv= 0.007200 , V= 0.002220 , hA = .C O 6.258065 Kva 0.008549 , V = 0.001655 , hA =.D O 6.258065 Kv= 0.007200 , V= 0.001655 , hA = E O 9.741935

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Alloys

An alloy is an admixture of two or more metals or a metal and a non-metal. Since ancient times, man has been using alloys. Alloying helps to retain the properties of the parent matter, such as hardness, strength, toughness, ductility and is corrosion-resistant. Copper alloys such as brass have antimicrobial properties that help to fight against (Coronavirus disease 2019) COVID-19 and other hospital-acquired infections. Some common alloys are brass, bronze, solder steel, etc. Most alloys have a lower melting point than their constituents. This is due to the presence of a nonmetal as one of the constituents that behaves as an impurity and restricts the raise of melting point.