Answer on Electric Circuits Question for marina
resistivity at 20.0celcius is 5.6x10^-8 ohms/m
So we solve the equation for L, L= R(A)/p R= V/I so 120v/1.5A= 80ohms R= 80ohms A= 4x3.14xradius^2 so 4x3.14x(.075mm)^2= .071mm^2 A= .071mm^2 or 7.1x10^-5m T= Tc + 273 20c+(273c)=293K and 1320c+(273c)=1593.15K 1593.15k-293k=1300.12 K P= (Resistivity)[1+(coefficient of resistivity)(1300.12K) p= (5.6x10^-8)[1+(4.5x10^-3)(1300.12)= 3.84x10^-7 p=3.83x10^-7 L=80A(7.1x10^-5m)/(3.83x10^-7ohmsxmeters)=14830m long
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