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+2 votes
54.7k views
in Physics by (48.4k points)

A pan filled with hot food cools from 94 °C to 86 °C in 2 minutes. When the room temperature is 20 °C. How long will it cool from 74 °C to 66 °C? 

(1) 2.8 minutes 

(2) 1.8 minutes 

(3) 2 minutes 

(4) 2.5 minutes 

1 Answer

+1 vote
by (52.4k points)
selected by
 
Best answer

Correct option (1) 2.8 minutes

Explanation:

From Newton’s law of cooling,

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