Question: Cooper 1 3 . 7 . 1 1 A cup of coffee was made at a temperature of 9 0 C and cools according to

Cooper 13.7.11
A cup of coffee was made at a temperature of 90C and cools according to Newton's law of cooling. The room temperature is 30C. If the temperature of the coffee 20 minutes after being made was 40C
(a) What was the temperature of the coffee 5 minutes after being made?
Temperature =C
(b) When was the temperature of the coffee 80C Time = minutes
Cooper 1 3 . 7 . 1 1 A cup of coffee was made at

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