The rate of cooling for a body is given by = k0, where k is a constant. If 0 = 60° dt when t= 2 minutes and 0 = 50° C when t= 5 minutes, determine the time taken for the temperature to fall to 40°C, correct to the nearest second.

The rate of cooling for a body is given by = k0, where k is a constant. If 0 = 60° dt when t= 2 minutes and 0 = 50° C when t= 5 minutes, determine the time taken for the temperature to fall to 40°C, correct to the nearest second.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.36P

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de
The rate of cooling for a body is given by
= k0, where k is a constant. If 0 = 60
dt
when t= 2 minutes and 0 = 50°C when t =5 minutes, determine the time taken for the
temperature to fall to 40°C, correct to the nearest second.
3.

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