A brass rod with a length of 10.0 cm is placed end to end with an aluminum rod with a length of 30.0 cm and this system is placed between a hot temperature of 100 and a cold temperature of 10.0The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m C and 230 W/m respectively. The rods have the same cross sectional area of 20.0 cm2. What is the heat flow from the hot temperature to the cold temperature?

A. 55.3 W
B. 65.3 W
C. 70.3 W
D. 78.1 W
E. 85.3 W


D. 78.1 W

Physics & Space Science

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