Question 3:   A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the sketch. On a cold winter day the convection heat transfer  coefficients are ho  60 W/m2  K and hi  30 W/m2  K. The total wall surface area is 350 m2.  (a)Determine the total heat loss through the wall.          (b) If the wind were blowing violently, raising ho to 300 W/m2  K, determine the percentage increase in the heat loss.

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