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Una esfera se encuentra a 9 2 7 deg C . El objeto est en contacto con aire a 2 7 deg C

Una esfera se encuentra a 927\deg C. El objeto est en contacto con aire a 27\deg C, dejndose enfriar a lo largo del tiempo. Considerando que la transferencia de calor solo es por radiacin, la ecuacin que modela el proceso es: (dT)/(dt)=-2,2067\times 10^(-12)(T^(4)-81\times 10^(8)) Donde, T es la temperatura del objeto en K y t el tiempo en s. Calcule la temperatura de la esfera a los 8min, empleando el mtodo de Runge-Kutta de 3er orden, considerando un paso de 1min. Si la solucin analtica de la ecuacin diferencial es la que se muestra a continuacin, determine el porcentaje de error para la aproximacin numrica: 0,92593ln((T-300)/(T+300))-1,8519tan^(-1)(0,00333T)=-0,22067\times 10^(-3)t-2,9282

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