Question

Determine the time in seconds taken for the temperature to fall from 68.0oC to 62.1oC. Measure the rate of fall at temperature 68.0oC and 62.1oC.

Answer 1

$$T-T_s=(T_o-T_s)e^{-kt}$$

$$62.1-0=(68-0)e^{-0.277t}$$

$$t=0.328\ s$$