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3 Nov 2021

Given information

Given information is that the temperature of the corpse at  was  and after an hour later temperature falls to .

Given normal body temperature is and the temperature of the surrounding was

Calculate the time of the murder.

Step-by-step explanation

Step 1.

Examine Newton's law of Cooling

Separate  the variables and integrate   

Let  be a variable  

Therefore,

Put  in Newton's law of cooling, then the equation of cooling becomes 

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