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A pot with a steel bottom 8.50 mm thick rests on a hot
Chapter 17, Problem 69E(choose chapter or problem)
A pot with a steel bottom 8.50 mm thick rests on a hot stove. The area of the bottom of the pot is \(0.150 \mathrm{~m}^{2}\). The water inside the pot is at \(100.0^{\circ} \mathrm{C}\), and 0.390 kg are evaporated every 3.00 min. Find the temperature of the lower surface of the pot, which is in contact with the stove.
Questions & Answers
QUESTION:
A pot with a steel bottom 8.50 mm thick rests on a hot stove. The area of the bottom of the pot is \(0.150 \mathrm{~m}^{2}\). The water inside the pot is at \(100.0^{\circ} \mathrm{C}\), and 0.390 kg are evaporated every 3.00 min. Find the temperature of the lower surface of the pot, which is in contact with the stove.
ANSWER:Solution 69E Given m=0.390 k 3 Lv=2256 × 10 J/kg 2 A=0.150 m . 0 T c 100 C T H = We know that Q = mL v 3 = 0.390 kg × 2256 × 10 J/kg = 8.798 × 10 J Q H =