Heat is conducted through a slab composed of parallel layers of two different materials of condu...

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Heat is conducted through a slab composed of parallel layers of two different materials of conductivities \( 134.4 \) SI units and \( 58.8 \) SI units and of thicknesses \( 3.6 \mathrm{~cm} \) and \( 4.2 \mathrm{~cm} \), respectively. The temperature of the outer faces of the compound slab are \( 96^{\circ} \mathrm{C} \) and \( 8^{\circ} \mathrm{C} \). Find (i) the temperature of the interface, (ii) temperature gradient in each section of the slab.
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