A thin rod consists of two parts joined together. One-third of it is silver and two-thirds is gold. The temperature decreases by 24 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.)