A body cools from 80 °C to 50 °C in 5 minutes. Calculate the time it takes to cool from60 °C to 30°C. The temperature of the surroundings is 20 °C.
Question
Solution 1
This problem can be solved using Newton's Law of Cooling, which states that the rate of change of temperature of an object is proportional to the difference between its own temperature and the ambient temperature, provided the difference is small.
The formula for Newton's Law of Cooling is:
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