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\( \frac { d T } { d t } = - k ( T - 20 ) \)

Ask by Bryant Schneider. in Colombia
Mar 15,2025

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La solución de la ecuación diferencial \( \frac{dT}{dt} = -k (T - 20) \) es: \[ T(t) = 20 + A e^{-k t} \] donde \( A \) es una constante determinada por las condiciones iniciales.

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Bonus Knowledge

This equation describes Newton's Law of Cooling, which states that the rate of change of the temperature (T) of an object is proportional to the difference between its temperature and the ambient temperature (in this case, 20°C). This principle can be observed in everyday life, like when a hot cup of coffee cools down to room temperature; the greater the temperature difference, the faster the cooling process. To solve this first-order linear differential equation, you can separate variables or use an integrating factor. Common mistakes include neglecting unit consistency or final values. Always double-check your initial conditions and make sure to integrate properly to avoid equation mishaps. Remember, the function's exponential decay reflects the diminishing temperature difference!

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