Thermal Expansion

### Linear Thermal Expansion

An iron rod, average linear coefficient of expansion 12 × 10−6 °C−1, has a length of 15 m at 20 °C if the bar is heated to 150 °C find:
ä) The expansion of the bar;
b) The final length of the bar.

### Area Thermal Expansion

A square aluminum plate has an area of 2 m2 at 50 °C, if the plate is cooled to 0 °C its area decreases from 0.0044 m2. Find the coefficients of surface and linear expansion of aluminum

### Volumetric Thermal Expansion

A container with an internal volume of 1 liter at 20 °C is heated to 100 °C. Find the internal volume of this container, after heating knowing that the coefficient of linear expansion of the material is 15 × 10−6 °C−1.

### Liquid Thermal Expansion

A container is filled with 125 cm3 of mercury at a temperature of 20 °C. The average coefficient of expansion of the mercury is 180 × 10−6 °C−1 and the coefficient of linear expansion of the glass is 9 × 10−6 °C−1. Find the volume of mercury spilled out when the temperature rises to 28 °C.