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1. |
A body in air at 25℃ cools from 100℃ to 75℃ in 1 minute. What is the temperature of the body at the end of 3 minutes? (Take log(1.5)=0.4) |
A. | 40℃ |
B. | 47.5℃ |
C. | 42.5℃ |
D. | 50℃ |
Answer» C. 42.5℃ | |