(Solved): 60M Go Eigure 18.23 shows the cross section of a wall made of three layers. The layer thicknesses a ...

$$60\mathrm{M}$$ Go Eigure $$18.23$$ shows the cross section of a wall made of three layers. The layer thicknesses are $$L_1,L_2=0.700L_1$$, and $$L_3=$$ $$0.350L_1$$. The thermal conductivities are $$k_1,k_2=0.900k_1$$, and $$k_3=0.800k_1$$. The temperatures at the left side and right side of the wall are $$T_H=30.0^{?}\mathrm{C}$$ and $$T_C=?15.0^{?}\mathrm{C}$$, respectively. Thermal conduction is steady, (a) What is the temperature difference $$?T_2$$ across layer 2 (between the left and right sides of the layer)? If $$k_2$$ were, instead, equal to $$1.1k_1$$, (b) would the rate at which energy is conducted through the wall be greater than, less than, or the same as previously, and (c) what would be the value of $$?T_2$$ ?