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Q. |
The sun shines on a 150 m2 road surface so it is at 45°C. Below the 5cm thick asphalt(average conductivity of 0.06 W/m K), is a layer of rubbles at 15°C. Find the rate of |
A. | 5300 w |
B. | 5400 w |
C. | 5500 w |
D. | 5600 w |
Answer» B. 5400 w | |
Explanation: there is conduction through the asphalt layer. |
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