A 16 mm-diameter steel rod AB is fitted to a round hole near end C of the wooden member CD. For the loading shown, determine, (a) the distance b for which the average shearing stress is 7MPA on the surfaces indicated by the dashed lines, (provide FBD and answer in mm)(b) the average bearing stress on the wood (provide FBD and answer in MPa) 25 тm. 8000N 4000N A 100 тm D 4000N В C

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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.