Question

What is thermodynamics...?​

Answer 1

Answer:

Thermodynamics is the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics describe how the energy in a system changes and whether the system can perform useful work on its surroundings.

Answer 2

Explanation:

Per capita income is national income divided by population size. Per capita income is often used to measure a sector's average income and compare the wealth of different populations. Per capita income is also often used to measure a country's standard of living. ... Per capita income is also called average income.They were built underground with stairs. Thus the pit-houses protected people from cold weather. Cooking chimney corners were also found both inside and outside the huts