Heat is being transferred by convection from water at $$48^\circ C$$ to a glass plate whose surface that is exposed to the water is at 40°C. The thermal conductivity of water is 0.6 W/m-K and the thermal conductivity of glass is 1.2 W/m-K. The spatial gradient of temperature in the water at the water-glass interface is $$\frac{dT}{dy} = 1 \times 10^4 k/m$$

The value of the temperature gradient in the glass at the water-glass interface in K/m is: