Metal lids on glass jars can often be loosened by running them under hot water.
ID: 1549842 • Letter: M
Question
Metal lids on glass jars can often be loosened by running them under hot water. Which one of the following statements is correct? The metal has a lower coefficient of thermal expansion than glass so the metal expands more than the glass. The metal has a higher coefficient of thermal expansion than glass so the metal expands less than the glass. The metal has a higher coefficient of thermal expansion than glass so the metal expands more than the glass. The hot water is a lubricant. The metal has a lower coefficient of thermal expansion than glass so the metal expands less than the glass.
Explanation / Answer
The metal has a higher coefficient of thermal expansion than glass so the metal expands more than the glass.