Why does it feel like a monday?
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Ответ:
The change in volume for a metallic dental filling due to the temperature difference is 0.1143 mm.
Explanation:
Given:
Temperature of the body is,![T_1=37\ \°C](/tpl/images/0398/6243/1bc87.png)
Temperature of the ice-cream is,![T_2=-6.2\ \°C](/tpl/images/0398/6243/078f3.png)
Initial volume of the filling is,![V=21.0\ mm^3](/tpl/images/0398/6243/cdb79.png)
Coefficient of thermal expansion is,![\alpha =42.0\times 10^{-6}\ K^{-1}](/tpl/images/0398/6243/17e65.png)
We know that the coefficient of volume expansion is related to thermal expansion as:
Now, change in volume for a metallic dental filling is given as:
Therefore, the change in volume for a metallic dental filling due to the temperature difference is 0.1143 mm.