I am really sorry but these are related to each other, pleaseand please show me all the steps with clear hand writing. thanks inadvance

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(a) Calculate the electrical conductivity ofcopper if it is given that the metal has 8.5 x 10²²conduction electrons per cm³ and the mobility of aconduction electron is 35cm².V^-1.s^-1.

answer , units

(b) In an electronics project you need toconstruct your own inductor. The instructions for making thisinductor is to “wind it from a 1.2 meter length of # 20 AWG(American wire gauge) copper wire.

(i) How thick is this wire in mm ?

(ii) What will be the resistance of your inductor ?

answer , units

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Q3) (i) Calculate the electrical conductivityof a piece of pure Si if it is given the number of intrinsiccarriers at 300 K is 1 x 10¹⁰ cm^-3 and thatthe electron and hole mobilities are  μ_e =1350 cm².V^-1.s^-1  andμ_h = 450cm².V^-1.s^-1respectively.

answer, units     

(ii) Compare the conductivities between Si and Cu at 300 K ascalculated from Q2 andQ3(i).         

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Q4) Following on from Q3, the temperature nowincreases to 350 K. Describe semi-quantitatively how and why thecarrier concentration and the conductivity will change due to thistemperature change for both these two materials (Si and Cu).