The discussion revolves around calculating the temperature difference between the inner and outer surfaces of a glass bulb surrounding a 100-W lightbulb, which generates 95 W of heat. The glass bulb has specific dimensions, including a radius of 3.2 cm and a thickness of 0.60 mm.
Some participants have provided the thermal conductivity value of glass, which is noted as 0.84 J/(s*m*C). The discussion includes inquiries about how to utilize this information to determine the rate of heat flow through the glass, indicating an exploration of relevant concepts without reaching a consensus.
Participants highlight the importance of knowing the thermal conductivity and dimensions of the glass bulb, suggesting that these factors are critical to solving the problem but are not fully defined in the discussion.
npr2036 said:A 100-W lightbulb generates 95 W of heat, which is dissipated through a glass bulb that has a radius of 3.2cm and is 0.60mm thick.
What is the difference in temperature between the inner and outer surfaces of the glass?
i am completely lost and need help
Suppose you knew the temperature difference, the dimensions of the glass bulb and the glass thickness. How would you use that to find the rate of heat flow through the glass?npr2036 said:the thermal conductivity of glass is 0.84 J/(s*m*C)
what do i do with this