Question: An electric kitchen range has a total wall area of 1.40 m2 and is insulated with a layer of fiberglass 4.00 cm thick. The inside

An electric kitchen range has a total wall area of 1.40 m2 and is insulated with a layer of fiberglass 4.00 cm thick. The inside surface of the fiberglass has a temperature of 175°C, and its outside surface is at 35.0°C. The fiberglass has a thermal conductivity of0.040W/m· K.
(a) What is the heat current through the insulation, assuming it may be treated as a flat slab with an area of 1.40 m2?
(b) What electric-power input to the heating element is required to maintain this temperature?

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