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A pan filled with hot food cools form 94...

A pan filled with hot food cools form `94^(@)C` to `86^(@)C` in 2 minutes . When the roo temperature is `20^(@)C`. How long will it cool from `74^(@)C` to `66^(@)C` ?

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A pan filled with hot food cools from 94^(@)C to 86^(@)C in 2 minutes when the room temperature is at 20^(@)C . How long will it take to cool from 71^(@)C to 69^(@)C ? Here cooling takes place according to Newton's law of cooling.

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