1. A garment is rated at 150 F for ironing. An iron is set
at 200 W. Is this setting appropriate? Assume heat flows primarily from the
surface for ironing, having an area of Airon = 0.4 ft2.
Other data include h = 10 Btu/ft2 ·h·F and Tambient = 70 F.
2. As shown in the figure, two plates made of the same
material and having constant k are exposed on one side to hot water at Tw
and hw and on the other to cold air at Ta and ha.
Using the direction of the x-axis as shown, write the boundary condition at a)
x = 0 and b) x = L for each case.
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