Using a practical application, explain what is meant by the First Law of thermodynamics
Question
Using a practical application, explain what is meant by the First Law of thermodynamics
Solution
The First Law of Thermodynamics, also known as the Law of Energy Conservation, states that energy cannot be created or destroyed, only transferred or changed from one form to another.
Let's use a practical application to explain this concept: a car engine.
-
The car engine works by burning gasoline (chemical energy) in a combustion reaction.
-
This combustion process generates heat (thermal energy), which is then used to do work (mechanical energy) by moving the pistons in the engine.
-
The movement of the pistons turns the crankshaft, which ultimately turns the wheels of the car, converting the mechanical energy into kinetic energy (the energy of motion).
-
Some of the thermal energy produced in the combustion process is not converted into mechanical energy, but is instead lost as heat to the surrounding environment.
-
Despite this loss, the total amount of energy remains constant. The chemical energy in the gasoline is not destroyed, but is instead converted into thermal energy, mechanical energy, and kinetic energy.
This is a practical example of the First Law of Thermodynamics. The total energy before the combustion process (chemical energy in the gasoline) is equal to the total energy after the combustion process (thermal, mechanical, and kinetic energy). The energy has not been created or destroyed, but has changed forms.
Similar Questions
what is first law of thermodynamics
Which of the following best describes the first law of thermodynamics?ResponsesEnergy always changes from a more useful, more concentrated form to a less useful, less concentrated form.Energy always changes from a more useful, more concentrated form to a less useful, less concentrated form.In a closed system of constant mass, the energy involved in any physical or chemical change is neither created nor destroyed, but merely changed from one form to another.In a closed system of constant mass, the energy involved in any physical or chemical change is neither created nor destroyed, but merely changed from one form to another.Heat always flows from a hot body to a cold body.Heat always flows from a hot body to a cold body.Entropy of a system increases as the state of disorganization in the system increases.Entropy of a system increases as the state of disorganization in the system increases.In a reversible process, the entropy of the system is constant, whereas in an irreversible process, the entropy of the system increases.
The second law of thermodynamics states that __________.
What is the first law of thermodynamics also known as?A.The law of conservation of heatB.The law of conservation of massC.The law of conservation of energyD.The law of conservation of matter
The first law of thermodynamics states that energy Blank______.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.