4- The four wires shown below are made from the same resistive material. Show the highest and lowest resistance wire. Explain your answer. A B 2L 2R C 2L 2R D ------

What can be used to remove the passivation layer from silicon? O Strong base Strong acid O Water О Нeat

Give some advantages and disadvantages of the high tensile strength nanowires when it is made by the Carbon-based nanomaterials.

Paragrph 4: Discusses the importance of recycling polymers and includes a recycling chart that list the 7 recycles codes and the polymer type.

State whether the following statement is ‘True’ or ‘False’. (2 × 10 = 20) Give a brief explanation for each of your answers, as applicable. Alpha-Polonium has a body-centered cubic structure. True    False A dislocation loop must always be a mixed dislocation. True   False Divacancies in any metal are present at much higher concentration than monovacancies. True False Generally, a quenched metal has a higher electrical resistivity than an annealed metal. True False Shockley partials are considered glissile in nature. True  False Wider stacking faults make cross-slip more difficult, that is why cross-slip in brass (Cu-Zn) is more difficult than copper (Cu). True False According to Hume-Rothery’s rule, the solvent and solute in a substitutional solid solution must have 5% size difference. Pearson symbol of copper cP2. True   False Frank partial is a sessile dislocation. True   False Edge dislocations can cross-slip to move to other slip planes. True   False

( 82 ll 6 o 1::1A Q1/ choose the right answer for 0 of 0 the following points Monomers ------ to be Polymers * Polymorphism polymerization allotropy tempering قسم بلا عنوان O of 0 points material is not ceramic material. * Aluminium oxide graphite НА none >

Which materials are best suited for discharging excess static charge on your clothing during winter, Conductors or insulators?

Aluminum has a density of 2.7 g/cm3. Suppose you would like to produce a composite material based on aluminum having a density of 1.5 g/cm3. Design a material that would have this density. Would introducing bead of polyethylene, with a density of 0.95 g/cm3, into the aluminum be a likely possibility? Explain.

Why are resistors important in an electrical circuit? ) Resistors only allow a current to flow in one direction and can change alternating currents to direct currents. Resistors are electrical components that help to control the flow of the current in a circuit; they restrict the flow of electrons. ) Resistors consist of two pieces of conducting material separated by an insulating material called a dielectric. They are often used as timing devices, but they can transform electrical currents in other ways, too. ) Resistors can switch tiny electric currents on and off or amplify them.

Why are metallized films a cheaper alternative to foil?