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Una casa tiene paredes de ladrillo de 15 mm de espesor. En un da fro de invierno, la temperatura de las superficies interior y exterior

Una casa tiene paredes de ladrillo de 15 mm de espesor. En un da fro de invierno, la temperatura de las superficies interior y exterior de las paredes es de 20C y -12C respectivamente. Hay 120 m ^ 2 de espacio de pared exterior. La conductividad trmica del ladrillo es 0.711J/ms -C. Ms o menos, cunto calor se pierde a travs de las paredes por hora?

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