The burner and pot of Problem 5.54 can be modeled as shown in Figure P5.55. R0 models the thermal loss between the burner and the pot. The pot is modeled by a thermal capacitance CP in parallel with a thermal resistance RP .
a. Find the final temperature of the water in the pot— that is, find V0 as t ?? if IS = 75 A, CP = 80 F, R0 = 0.8?, RP = 2.5?, and the burner is the same as in Problem 5.54.
b. How long will it take for the water to reach 80 percent of its final temperature?
Hint: Neglect CS since CS ? CP .
Analysis:
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