# Why is Physics so Hard to learn as an interesting subject?

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408 When I ask someone about physics, they often say “physics is hard”. But, if I ask the reason, they do not know the exact reason. What makes you think physics is really hard. There may be some reasons we don’t know why physics can be difficult.

## first, we need to know what are the reasons we do not know why is physics so hard.

Although scientist physics has been shown to be a beautiful field, many students say that physics is a difficult subject. because of the formulas and calculations, they found at the subject of physics.

## Here there are some reasons to think physics is hard.

1. sometimes it acts as an experimental science.
2. Today, physics is a broad and highly developed subject.
3. Physics consists of many formulas and calculations.
4. Physics concepts related to everyday life.
5. Existence of various complex concepts.
6. The calculations are very serious.
7. Combination of science and mathematics.
8. Having a large syllabus containing laws, hand rules, vector quantities, and scalar quantities.
9. Remember many definitions and laws.
10. Difficulty manipulating laboratory equipment required for monitoring and testing.
11. Have to use algebra, geometry, calculus, and various other concepts to solve logical problems in physics.
12. Transfer from graphical to mathematical representation and vice-versa.
13. When doing a calculation, always think of something.
14. Having a large number of equations to solve.
15. Having boring titles instead of interesting ones for students.
16. Have to solve problems according to the laws.

## Here are some of the basic lows contained in physics.

• Newton’s Laws Of Motion(1642-1727) …

#### Newton’s first law

every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. The key point here is that if there is no net force acting on an object (if all the external forces cancel each other out) then the object will maintain a constant velocity.

#### Newton’s second law

The second low explains how the velocity of an object changes when it is subjected to an external force. The law defines a force to be equal to change in momentum (mass times velocity) per change in time. For an object with a constant mass m, the second law states that the force F is the product of an object’s mass and its acceleration a:

F=ma

#### Newton’s Third low

The third low states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A. Notice that the forces are exerted on different objects. The third law can be used to explain the generation of lift by a wing and the production of thrust by a jet engine.

• Avagadro’s Law. In 1811 it was discovered by an Italian Scientist Anedeos Avagadro. …
Avogadro’s law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law. A modern statement is: Avogadro’s law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.” Wikipedia  = first volume = second volume = first amount of gas (in moles) = second amount of gas (in moles)
• Ohm’s Law. …

When all physical factors, including temperature, are constant, the product of the current flowing through it and the resistance are proportional to the potential difference between the two.

V=IR

• Hooke’s Law (1635-1703)…

The displacement made according to Hooke’s law is proportional to the force exerted. And the displacement is in the same direction as the force applied.

Accordingly,

F=Ke

F- Force

e- Displacement

K- The proportional constant ‘k’ is called the force con

• Bernoulli’s Principle.

The sum of the pressure, the kinetic energy per unit volume, and the potential energy per unit volume are constant at any point in a non-viscous, uncompressed, unbalanced fluid.

## Some other lows contained in physics.

• Coulomb’s Law (1738-1806) …
• Stefan’s Law (1835-1883) …
• Pascal’s Law (1623-1662) …

PHYSICS AS A SUBJECT- The subject of the study of physical changes is called physics and the basis of physical events is energy. This topic discusses energy and its velocity.

## scientific method

The scientific method is given as a formal method for diverse exploration. It,

1. Observation
2. Hypothesis
3. Testing
4. Argument
5. Explosion
• #### Observation

The first step in the scientific method is an observation to collect data. Simple observations or as a result of another observation can be obtained data.

• #### Hypothesis

In science, a hypothesis an idea or explanation that you then test through study and experimentation. Testing such a hypothesis is testing.

• #### Testing

The test can be defined as a control system that is activated to detect or detect something. It means the test is performed to determine if the hypothesis is valid.

according to that, If the test result is not hypothetical, then, the experimental procedure should be checked.

Therefore, if the action sequence is repeated and the result is still contrary to the hypothesis, the hypothesis must be changed.

• #### Argument

If the experimental result confirms the hypothesis, the hypothesis naturally becomes an argument about any aspect and is a general principle based on observation.

• #### Forecasting

Forecasting is a technique that uses historical data as inputs to make informed estimates that are predictive in determining the direction of future trends. Businesses utilize forecasting to determine how to allocate their budgets or plan for anticipated expenses for an upcoming period of time.

## Why We Should learn Physics?

How do tides occur? the planets orbit the sun? a rainbow form? , lightning occur? and Why are liquid droplets spherical?

These are some of the problems in nature.

Why does the road slope into bends when building winding roads? does the sealed glass water bottle explode when frozen in the freezer? , doesn’t put hot water in a glass with thick walls? , wear glasses to increase vision? and why the fog on the windows of a car on a rainy day?  How do vessels like ships, boats float on water? , planes fly in the sky?   a bulb emit light? , objects look under a microscope or telescope? and finally why bows used by the car?

These are also just a few of the problems we face in our daily lives.

The answer to all these questions lies in physics. So, you understand that physics is the most practical subject close to man, full of beautiful and fascinating phenomena.

In this sense, physics has been used in disciplines such as engineering, computer science, aerospace, medicine, and technology, as it is an essential subject for gaining some understanding of the environment in which we live and related phenomena, and for applying them to our lives in practice. Accordingly, students have the opportunity to study a number of units related to physics in the subject as well.