(a) Would you expect Equation 19.7 to be valid for ceramic and polymeric materials? Why or why...

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(a) Would you expect Equation 19.7 to be valid for ceramic and polymeric materials? Why or why not?(b) Estimate the value for the Wiedemann??Franz constant L [in ?-W/(K)2] at room temperature (293 K) for the following nonmetals: silicon (intrinsic), glass-ceramic (Pyroceram), fused silica, polycarbonate, and polytetrafluoroethylene.image

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