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2. Why do most metals shrink when they are cast? (20 point) Shrinkage of solid Density Solidification shrinkage Shrinkage of liquid Time Fig. 2.

2. Why do most metals shrink when they are cast? (20 point) Shrinkage of solid Density Solidification shrinkage Shrinkage of liquid Time Fig. 2. Density as a function of time.

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