Determine the fractional decrease in the rods length using, Ask an Expert

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A thin rod consists of two parts joined together. One-fourth of it is silver and three-fourths is gold. The temperature decreases by 21 C°.
ΔL/(L0,Silver + L0,Gold)

Determine the fractional decrease in the rod's length using the formula above, where L0,Silver and L0,Gold are the initial lengths of the silver and gold rods. (See Table 12.1 for appropriate constants.)

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