Q5 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°. How long, measured from the start of the entire process, will it take the bar to reach 99.9° C?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q5
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°. How long, measured from the start of the
entire process, will it take the bar to reach 99.9° C?

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