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August 21, 2014

Homework Help: Physics

Posted by Amy on Wednesday, March 20, 2013 at 6:48pm.

Heat flow question help?A brass rod with a length of 30.0 cm is placed side by side with an aluminum rod with a length of 30.0 cm and this system is placed between a hot temperature of 100C and a cold temperature of 10.0C. The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m C and 230 W/m C respectively. The brass rod has a cross sectional area of 20.0 cm2 and the aluminum rod has a cross sectional area of 30.0 cm2. What is the heat flow from the hot temperature to the cold temperature?
542 W
54.2W
26.7 W
267 W

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