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 heat transfer to the rubbles.

The sun shines on a 150 m2 road surface so it is at 45 C. Below the 5c

1.	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 heat transfer to the rubbles.
A.	5300 W
B.	5400 W
C.	5500 W
D.	5600 W
Answer» C. 5500 W

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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 heat transfer to the rubbles.

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