Wednesday
April 16, 2014

Homework Help: physics 4**!!

Posted by kelsey on Thursday, December 4, 2008 at 11:56pm.

Consider a double-paned window consisting of two panes of glass, each with a thickness of 0.500 cm and an area of 0.880 m2, separated by a layer of air with a thickness of 1.90 cm. The temperature on one side of the window is 0.00C; the temperature on the other side is 20.0C. In addition, note that the thermal conductivity of glass is roughly 36 times greater than that of air.
(a) Approximate the heat transfer through this window by ignoring the glass. That is, calculate the heat flow per second through the 1.90 cm of air with a temperature difference of 20.0 C. (The exact result for the complete window is 21.4 J/s.) Express your answer with three significant digits.
? J/s

(b) Use the approximate heat flow found in part (a) to find an approximate temperature difference across each pane of glass. (The exact result is 0.144 C.) Express your answer with three significant digits.
? C

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A glass window pane has an area of 3.00 m2 and a thickness of 0.600 cm...
math - Diana designs stained-glass windows. She has a large supply of square ...
physics - A glass window pane has an area of 3.50 m2 and a thickness of 0.600 cm...
Physics - Use the exact values you enter in previous answer(s) to make later ...
Physics - Why is it that interference effects don't show up regularly in glass ...
Physics - A capacitor consisting of two parallel plates of area A = 4.6 m2 and ...
physics - Consider the Earth and a cloud layer 600 m above the planet to be the ...
physics - A glass window pane is exactly 23 cm by 38 cm at 10oC. By how much has...
physics - A glass window pane is exactly 23 cm by 38 cm at 10oC. By how much has...
physics - A window has a glass surface of 2686 cm2 and a thickness of 7.4 mm. ...

Search
Members