Charles Babbage KH FRS ( 26 December 1791 – 18 October 1871) was an English polymath. A mathematician, philosopher, inventor and mechanical engineer, Babbage originated the concept of a digital programmable computer.

Considered by some to be "father of the computer", Babbage is credited with inventing the first mechanical computer that eventually led to more complex electronic designs, though all the essential ideas of modern computers are to be found in Babbage's Analytical Engine. His varied work in other fields has led him to be described as "pre-eminent" among the many polymaths of his century.

Parts of Babbage's incomplete mechanisms are on display in the Science Museum in London. In 1991, a functioning difference engine was constructed from Babbage's original plans. Built to tolerances achievable in the 19th century, the success of the finished engine indicated that Babbage's machine would have worked.

A permutation is defined as an arrangement in a definite order of a number of objects taken some or all at a time. Counting permutations are merely counting the number of ways in which some or all objects at a time are rearranged. The convenient expression to denote permutation is defined as “ ⁿP_r ”.

The permutation formula is given by,

The SI unit of work is the joule (J). ewton meter in termed and Joules and it is the unit of Work.

The SI unit of energy is joules (J), which is named in honour of James Prescott Joule.

IPO stands for Input, Output and Process.
As the name suggests, IPO cycle is the input and output after process of the data. To get output, u have to first give input and then the input needs to be processed to get your desired result,i.e. Output

Physical education is the best way to improvise a healthy and a social life. It is very beneficial and also very important. As it helps in many ways like it develops concentration during studies, refreshes your brain/relaxes your body from any kind of stress. It keeps you active and have a proper fit and healthy lifestyle

Order, respect, not lying and discipline are important. It is not reasonable to expect the same performance from all students in the physical education lesson; thus, their moral and value development should be on the forefront. Being respectful and honest, that is, moral teaching is important. When regular fitness activities are included in the lifestyle of a student, it is possible for them to maintain fit. Regular physical activity can help to improve the absorption of nutrients in the body. It also helps to improve cardiovascular health and develop muscular strength.

Parallelogram Law of Vector Addition:

This law is also very similar to the triangle law of vector addition. Consider the two vectors again.
Now for using the parallelogram law, we represent both the vectors as adjacent sides of a parallelogram and then the diagonal emanating from the common point represents the sum or the resultant of the two vectors and the direction of the diagonal gives the direction of the resultant vector.

The resultant vector is shown by C. This is known as the parallelogram law of vector addition.

By using the orthogonal system of vector representation the sum of two vectors

a = a₁i^+a₂j^+a₃k^ and b = b₁i^+b₂j^+b₃k^ is given by adding the components of the three axes separately.

i.e. a + b = a_ii^+a₂j^+a₃k^+b₁i^+b₂j^+b₃k^

⇒a+b = (a₁+b₁)i^+(a₂+b₂)j^+(a₃+b₃)k^

1. To develop personality, characters, citizenship among nations.
2. To develop good habits among sports persons.
3. To pay attention towards  physical  education  and  sports  Competitions among countries.
4. To develop International fraternity and peace.

Cash A/C             Dr.   11,500

                             To capital A/C 11,500

Purchase A/C       Dr.  15,000

                          To cash A/C    15,000

Purchase  A/C       Dr.   10,000

                         To Subhash A/C  10,000

Furniture  A/C     Dr. 12,600

                          To cash A/C     12,600

Subhash A/C     Dr.7,000

                           To cash A/C    7,000

Purchase A/C      Dr.  2,500

                           To cash A/C   2,500

Machinery A/C  Dr.9,000

                             To cash A/C 9,000

Rent A/C    Dr.  800

                        To cash A/C 800

Availability of Substitutes: In general, the more good substitutes there are, the more elastic the demand will be. ... This means that coffee is an elastic good because a small increase in price will cause a large decrease in demand as consumers start buying more tea instead of coffee. It is so because these products are very sensitive to price. For example, if a product has many substitutes, the buyers will shift to one of them as the price of this poduct increases. Thus, the nature of the commodity influences the price elasticity of demand.

Lungs are the chief centres of the respiration in humans and other vertebrates. They are located in the thoracic cavity of the chest near the backbone and on either side of the heart. They are the pair of large, spongy organs, mainly involved in the exchange of gases between the blood and the air. Compared to the left lung, the right lung is quite bigger and heavier.

In research the main concern is with the understanding and explanation of behaviour and mental events and processes. Psychologists, who choose to engage in research, function more like other scientists. Like them, they drew conclusions which are supported by data. They design and conduct experiments or studies under controlled conditions on a wide range of psychological phenomena. The purpose is to develop general principles about behaviour and mental processes. The conclusions drawn on the basis of such studies apply to everybody and are, therefore, universal. Experimental, comparative, physiological, developmental, social, differential and abnormal psychology are generally regarded as domains representing basic psychology.
The themes of research in these fields differ from each other. For example, experimental psychologists study the purposes of perception, learning, memory, thinking and motivation; etc. using experiment as their method of enquiry, whereas physiological psychologists attempt to examine physiological bases of these behaviours. Developmental psychologists study qualitative and quantitative changes in behaviour from the beginning of human life to its end, whereas social psychologists focus on the study of experience and behaviour of individuals as they take place in social contexts.

Quantities Having the Same Dimensional Formula

1. Impulse and momentum.
2. Work, energy, torque, the moment of force, energy.
3. Angular momentum, Planck’s constant, rotational impulse.
4. Stress, pressure, modulus of elasticity, energy density.
5. Force constant, surface tension, surface energy.
6. Angular velocity, frequency, velocity gradient.
7. Gravitational potential, latent heat.
8. Thermal capacity, entropy, universal gas constant and Boltzmann’s constant.
9. Force, thrust.
10. Power, luminous flux.