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Solved: Two identical coolers are packed for a picnic. Each cooler is packed with

Chapter 3, Problem 89P

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QUESTION:

Two identical coolers are packed for a picnic. Each cooler is packed with eighteen 12-oz soft drinks and 3 lb of ice. However, the drinks that went into cooler \(A\) were refrigerated for several hours before they were packed in the cooler, while the drinks that went into cooler \(B\) were at room temperature. When the two coolers are opened three hours later, most of the ice in cooler \(A\) is still ice, while nearly all of the ice in cooler \(B\) has melted. Explain.

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QUESTION:

Two identical coolers are packed for a picnic. Each cooler is packed with eighteen 12-oz soft drinks and 3 lb of ice. However, the drinks that went into cooler \(A\) were refrigerated for several hours before they were packed in the cooler, while the drinks that went into cooler \(B\) were at room temperature. When the two coolers are opened three hours later, most of the ice in cooler \(A\) is still ice, while nearly all of the ice in cooler \(B\) has melted. Explain.

ANSWER:

Step 1 of 2

When two substances are allowed to remain in contact for an extended period of time, they tend to bring their temperatures closer together. That is, the substance at a higher temperature transfers energy to the substance at a lower temperature, moving their temperatures closer together.

 

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