1.(Newton’s law of cooling)
A bowl of soup at 100°C is bought into a room where the air is 20°C
and is left to cool. After 1 hr., its temperature is 60°C. How much
additional time is required for it to cool to 30°C?
2. (Dead Body)
Suppose that a dead body with temperature 83.6 0 F was discovered
at midnight in a room of temperature 68.6 0 F. One hour later, the
temperature of the body was measured at 76.1 0 F. Estimate the time
of death of the person. (Assume that at the time of death, body
temperature was 98.6 0 F).
