Use the following steps to estimate the net heat flow to/from the road.

a. Build a series-of-resistances model to show how much heat flows from the aquifer to the surface of the road. If the road is at 0.0C, how much heat flows from the aquifer to the road?

b. If the air temperature is -10.0C, how much heat flows from the surface of the road to the air?

c. What is the net heat flow to (or from) the surface of the road? Be sure to report your result on an appropriate scale (W, kW, MW) (Dont forget about the heat from the sun)

d. Is the road surface getting warmer or cooling off?