Question

What is the real-life example of the first law of thermodynamics?

Answer 1

Thermodynamics is the part of physics that consists of heat, temperature, and work done by or on a system as well as the relationship to the energy, radiation, and other properties of the matter or the system. Four laws exist in thermodynamics: Zeroth law, First law, Second law, and Third law. Each law has an important statement. Since the given question is about the First law of thermodynamics the statement, as well as the implementations of the law, are to be known.

Complete step by step answer:
The first law of thermodynamics:
When heat is given to a system it works in two types – i) a few portions of the heat increases the temperature of the internal energy of the system and, ii) the system can do some external work by the left portions of the heat.
Therefore, The given heat = the increase in the internal energy + the external work done.
The real-life examples of the 1st law of thermodynamics are:
1. The bulbs that emit light convert electrical energy into light energy. Light energy is also known as radiant energy.
2. In the collision of two pool balls, if the 1st ball hits the second one, that means it transfers kinetic energy and makes the 2nd ball move.
3.Trees transfer the energy of sunlight into chemical energy. The chemical energy is stored in organic molecules.
4. During the transformation of the chemical energy from the last snack into kinetic energy as the walking, breathing, and moving of organs.

Note:
The first law of thermodynamics tells us that it is possible to convert mechanical energy into thermal energy and vice versa. For doing a certain amount of work, a certain amount of heat is required. Oppositely, to get a certain amount of heat a certain amount of work done is needed. Without wasting energy it is not possible to get work. Therefore, such a machine can not be made that will work a lifetime without getting energy.