A composite wall is formed of a 2.5 cm copper plate (k=385 W/m-K). a 3.2 cm layer of asbestos (k=0.2 W/m-K), and a 5 cm layer of fibreglass (k=0.045 W/m-K). The wall is subjected to an overall...

A composite wall is formed of a 2.5 cm copper plate (k=385 W/m-K). a 3.2 cm layer of
asbestos (k=0.2 W/m-K), and a 5 cm layer of fibreglass (k=0.045 W/m-K). The wall is subjected to an overall temperature drop of 560°C. Calculate the heat flux through the composite wall and also determine the temperature drop across the asbestos layer?