Question
A brass rod is x 1 = 74.0 cm long and an aluminum rod is x 2 = 75.0 cm long when both rods are
A brass rod is x1 = 74.0 cm long and an aluminum rod is x2 = 75.0 cm long when both rods are at an initial temperature of 0C. The rods are placed in line with a gap between them, as shown in the figure. The distance between the far ends of the rods is maintained at a constant d = 150 cm. The temperature of both rods is raised until the two rods are barely in contact. The coefficients of linear expansion of brass and aluminum are 2.0 x 10-5/K and 2.4 x 10-5/K, respectively. What is the temperature at which contact of the rods barely occurs, in C?
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