5h Iransient Cooling of a Solid with a Nonuniform Initial Temperature Consider the transient conduction problem in Fig. P5-6, in which the initial temperature of a s y slab is f(x), the left side is insulated, and the right side is maintained at the ambient tempera- figre P5-6. Transient conduction in a solid sheet with a nonuniform initial temperature. ture. Assume that the initial temperature distribution is the result of a volumetric heat source that is present until t=0. (a) Suppose that f(x)=(1x2)/2, which corresponds to a heat source of unit magnitude for t