### ProblemA rod of an unknown material grows in length by 0.30% when its temperature is raised by 140°C, at which point it melts. In liquid form, it is poured into a container and allowed to cool so that it solidifies. When it has cooled by 90°C, by what percentage has the volume of the contents of the container gone down?### Optionsa. 0.16% b. 0.19% c. 0.47% d. 0.58% e. 0.90% ### ExplanationThe question involves understanding the relationship between temperature change and material properties, specifically how the volume of a material changes with temperature. The given data indicates a linear thermal expansion due to the change in temperature. The student is required to calculate the percentage decrease in the volume of the solidified material.

Given:percentage increase in length, dLL×100 = 0.30%when temperature is raised by, dT = 140 oCwhen…

Answered: 4. A rod of an unknown material grows…

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