Physics question help?

Ninety-five percent of the electrical energy consumed by a 60.0 W incandescent lightbulb is converted to heat. The spherical glass envelope of the bulb has a radius of 2.50 cm and is 0.500 mm thick. The thermal conductivity of the glass is 0.80 W/(m*K). What is the temperature difference between the inside and... show more Ninety-five percent of the electrical energy consumed by a 60.0 W incandescent lightbulb is converted to heat. The spherical glass envelope of the bulb has a radius of 2.50 cm and is 0.500 mm thick.

The thermal conductivity of the glass is 0.80 W/(m*K). What is the temperature difference between the inside and outside surfaces of the glass after steady-state heat flow has been established? in celcius

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