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Applying the Energy BalanceA gallon of milk at 68°F is
Chapter 3, Problem 85P(choose chapter or problem)
A gallon of milk at \(68^{\circ} \mathrm{F}\) is placed in a refrigerator. If energy is removed from the milk by heat transfer at a constant rate of \(0.08 \mathrm{Btu} / \mathrm{s}\), how long would it take, in minutes, for the milk to cool to \(40^{\circ} \mathrm{F}\) ? The specific heat and density of the milk are \(0.94 \mathrm{Btu} / \mathrm{lb} \cdot{ }^{\circ} \mathrm{R}\) and \(64 \mathrm{lb} / \mathrm{ft}^3\), respectively.
Questions & Answers
QUESTION:
A gallon of milk at \(68^{\circ} \mathrm{F}\) is placed in a refrigerator. If energy is removed from the milk by heat transfer at a constant rate of \(0.08 \mathrm{Btu} / \mathrm{s}\), how long would it take, in minutes, for the milk to cool to \(40^{\circ} \mathrm{F}\) ? The specific heat and density of the milk are \(0.94 \mathrm{Btu} / \mathrm{lb} \cdot{ }^{\circ} \mathrm{R}\) and \(64 \mathrm{lb} / \mathrm{ft}^3\), respectively.
ANSWER:Solution 85P
Step 1 of 5
Here our aim is to determine the time taken for the milk to cool from to .
