Engineering, 18.04.2020 00:56 jacamron

The temperature T of a small copper sphere cooling in air is measured as a function of time t to yield the following:
t (s) 0.2 0.6 1.0 1.8 2.0 3.0 5.0 6.0 8.0
T (°C) 146.0 129.5 114.8 90.3 85.1 63.0 34.6 25.6 14.1
An exponential temperature decrease is expected from theoretical considerations.
(a) Using linear regression, obtain the exponent c and the constant C, where T = Ce^−ct represents the variation. Also, solve this problem using the polyfit function in MATLAB.

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