A solid sculpture (Figure 4-16) with M = 2 lb_m and C_P = 0.5 BTU/lb_m · °R is heat-cured in an oven at 250°F and ambient pressure. It is removed from the oven, placed on a table, and allowed to cool to room temperature, which is 70°F. The room is large enough that the heat released by the sculpture has no significant effect on the room temperature. Find the amount of heat released, the change in entropy of the sculpture, and the change in entropy of the universe.

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M = 2 lbm T= 250°F Cp=0.5 BTU/lb R Q = ? M = 2 lbm T = 70°F Cp=0.5 BTU/lbmR FIGURE 4-16 Cooling process examined in Example 4-9.