Find the change in volume for a metallic dental filling due to the difference between body temperature (37.0°c) and the temperature of the ice cream you ate (-6.2°c). the initial volume of the filling is 21.0 mm3, and its expansion coefficient is α = 42.0 × 10−6 k−1

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,

Temperature of the ice-cream is,

Initial volume of the filling is,

Coefficient of thermal expansion is,

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.

the total distance traveled by the car is

30km + 49km = 79 km .