Physics gives clarity of the mechanism happening behind every action. The major contribution of physics can be seen in electricity and the laws of physics which are being used almost everywhere. Physics laws could be witnessed in the various natural phenomenon and can be described with the help of formulas and statements supporting the theory. Some major concepts of physics are fluid mechanics which is the study of inflow of water, laws of motion which can be applied in the study of speed and velocity of automobiles, etc. Below are some major physics laws which we should be aware of today.Applications of these laws bring out new insights into this subject.

**Laws Of
Thermodynamics**

There were several scientists who did a significant contribution in
this field such as Nicolas Leonard Sadi Carnot who found out the efficiency of
the engine which was named after him as Carnot engine. Here, the values given
can be used to find the output of equations by **conversion of
units** and satisfying the laws with the right value. The definition of
thermodynamics was discovered by Lord Kelvin.

**Theory Of Uncertainty**

The field of quantum mechanics originated from the theory of uncertainty which was named after the scientist Heisenberg and tells that position and the object’s velocity cannot be measured at the same time. The representation of this theory is ΔpΔx≥h4π where Δ is uncertainty in that variable and h is the Planck’s constant.

**Laws Of Motion**

Another significant discovery of the phenomena was conducted by Einsteinand led to a massive development of physics by formulating the laws of motion which contain three fundamental laws as:

- Until an external force acts upon it, a body stays rest or in motion.
- Every action has an equal or opposite reaction.
- Force equals to mass times acceleration which is represented by F=ma, m= mass of the object, a= acceleration

We can solve multiple questions using numbers or **vectors** for
understanding the laws.

**Theory Of Relativity**

In
the field of physics, some equation which is used is the theory of relativity,
which goes E=mc^{2}. This equation states that matter and energy are
equivalent to each other. The origins and structure of the universe can be
understood by this theory. This marvelous theory was given to us by Einstein.

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