A square isothermal chip is of width w ! 5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at T! ! 15)C. From reliability considerations, the chip temperature must not exceed T ! 85)C. If the coolant is air and the corresponding convection coefficient is h ! 200 W/m2 ! K, what is the maximum allowable chip power? If the coolant is a dielectric liquid for which h ! 3000 W/m2 ! K, what is the maxi- mum allowable power?