- #1
hollyxiba
- 1
- 0
what exactly is elongation? in the thermal expansion question, it says if the elongation of the 2 rod fasten end to end is the same
Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.
Thermal expansion occurs because as the temperature of a material increases, its particles vibrate faster and take up more space. This causes the material to expand.
The coefficient of thermal expansion is a measure of how much a material expands or contracts when its temperature changes. It is typically expressed in units of length per unit temperature change (e.g. mm/mK).
The main factors that affect thermal expansion are the material's composition, temperature change, and the dimensions of the material. Materials with a higher coefficient of thermal expansion will expand more than those with a lower coefficient.
Some common examples of thermal expansion include the expansion and contraction of metal bridges and railroad tracks due to temperature changes, the cracking of pavement in extreme heat, and the expansion and contraction of glass in windows and doors.