if thhe air is maintained at 20°C and the body cools for 20 minutes from 140 °C to 80°C find when the temperature will be 35°C
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Answered by
2
Answer:
xdxd
Step-by-step explanation:
xdxdd
Answered by
3
Step-by-step explanation:
- By the Newton's law of cooling dx/dt=x-x........ >1
- by solving equation 1 we get
- x=x•+ce^-kt
- given that, x=140 and x•=20 at t=0
- substitute in solving equation
- 140=20+ce^-kt
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