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Change in temperature

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Two large containers A and B of the same size are filled with different fluids. The fluids in containers A and B are maintained at 0 C and 100 C, respectively. A small metal bar, whose initial temperature is 100 C, is lowered into container A. After 1 minute the temperature of the bar is 90 C. After 2 minutes the bar is removed and instantly transferred to the other container. After 1 minute in container B the temperature of the bar rises 10 C. How long, measured from the start of the entire process, will it take the bar to reach 99.9 C?

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Solution Summary

This shows how to determine how long it will take for a container to reach a given temperature.

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