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.

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.

The average coefficient of linear expansion of iron is equal to 0.0000117 °C⁻¹. How much does it increase the temperature of an iron block so that its volume increases from 1%?

Two metallic blocks A and B, at 0 °C, have equal volumes to 250.75 cm³ and 250 cm³, respectively. The averages coefficients of linear expansion are, respectively, 2×10⁻⁵ °C⁻¹ and 3×10⁻⁵ °C⁻¹. Determine:
a) The temperature in which the blocks have equal volumes;
b) What is the volume of the blocks in the temperature calculated in item (a).

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

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.