The aim of sustainable development is to balance our economic, environmental and social needs, allowing prosperity for now and future generations. Sustainable development consists of a long-term, integrated approach to developing and achieving a healthy community by jointly addressing economic, environmental, and social issues, whilst avoiding the over consumption of key natural resources.

The criterion used by the UNDP for measuring development is different from the one used by the World Bank in the sense that it uses a combination of factors such as health, education and income as indicators of development. It does not rely solely on per capita income, as is the case with the World Bank.

Computer Incharge

Delhi Public School,

New Delhi

27th July, 2018.

The Manager

Apple Incorporation

Nehru Place, New Delhi

Sub : Placing an order for 20 computer sets.

Sir,

On behalf of the Computer Incharge, I would like to place an order for 20 computers and their accessories.

You have a very good reputation of selling quality computer sets. Your computers are of superior quality. After going through your latest catalogue of computers, I am placing an order of 20 computer sets for our school.

All the computers should be of good quality, including some necessary softwares. Substandard items will be returned. Computers should be delivered in school before 1 p.m. within 7 days.

Please send the bill after deducting maximum discount as applicable for educational institutes.

Yours truly,

Neha Singh

(Computer Incharge)

Partisanship is marked by a tendency to take a side and inability to take a balanced view, on an issue. Parties reflect fundamental political divisions in a society. Parties are a part of the society and they involve partisanship.

) कॉलेज का अनुशासन बिगाड़ने के आरोप में थर्ड इयर की कक्षाएँ बंद कर दी गई और लेखिका और उनकी सहयोगियों का प्रवेश निषिद्ध कर दिया गया। लेकिन छात्राओं के हुड़दंग मचाने पर उन पर लगे प्रतिबंध को हटा दिया गया। यही खुशी स्वतंत्रता मिलने की खुशी में समा गई। व्याख्यात्मक हल: कॉलेज वालों ने शीला अग्रवाल और मन्नू भंडारी की गतिविधियों को देखकर उन्हें कॉलेज से निकाल दिया। इस प्रकार कॉलेज का अनुशासन बिगाड़ने के आरोप में थर्ड इयर की कक्षाएँ बंद कर दी गई और लेखिका और उनकी सहयोगियों का प्रवेश निषिद्ध कर दिया गया, लेकिन कॉलेज से बाहर रहते हुए भी लेखिका और छात्राओं ने इतना हुड़दंग मचाया कि कॉलेज वालों को हार मानकर अगस्त में थर्ड ईयर की कक्षाएँ फिर चालू करनी पड़ीं। यही खुशी स्वतंत्रता मिलने की खुशी में समा गई

Common Barriers;

1.Semantic Barriers.

2.Psychological Barriers.

3.Organisational Barriers.

4.Personal Barriers.

Measure to overcome these barriers;

1.Clarify the ideas before communication.

2.Communicate according to needs of receiver.

3.Ensure proper feedback.

4.Be a good listener.

 The history of nationalism in Britain unlike the rest of Europe because:

• In Britain the formation of the nation-state was not the result of a sudden upheaval or revolution. It was the result of a long-drawn-out process. There was no British nation prior to the eighteenth century.
• The primary identities of the people who inhabited the British Isles were ethnic ones – such as English, Welsh, Scot or Irish.
• The Act of Union (1707) between England and Scotland that resulted in the formation of the ‘United Kingdom of Great Britain’ meant, in effect, that England was able to impose its influence on Scotland. The British parliament was henceforth dominated by its English members. The growth of a British identity meant that Scotland’s distinctive culture and political institutions were systematically suppressed.
• The Catholic clans that inhabited the Scottish Highlands suffered terrible repression whenever they attempted to assert their independence. The Scottish Highlanders were forbidden to speak their Gaelic language or wear their national dress, and large numbers were forcibly driven out of their homeland

Comparing f(x) = 4x² - 8kx - 9  with ax2+bx+c we get
a=4; b=-8k and c=-9.

Since one root is the negative of the other, let us assume that the roots are p an -p.
Sum of the roots, a+(-a)=-b/a= - (-8k) / 4
0=2k
k=0

A n s w e r

The value of 9sec²A-9tan²A =9

Step-by-step explanation:

The value of 9sec²A-9tan²A

= 9(sec²A-tan²A)

/* By Trigonometric identity:

= 9 ×1

= 9

Therefore,.

The value of 9sec²A-9tan²A =9

(i) The Balkans was a region of geographical and ethnic variations comprising modern day Romania, Bulgaria, Albania, Greece, Macedonia, Crotia, Bosnia-Herzegovina, Slovenia, Serbia and Montenegro whose habitants were called Slavs. A large part was under control of Ottoman Empire.

(ii) The spread of the ideas of romantic nationalism in the Balkans together with the disintegration of the Ottoman Empire made this region very Explosive.

(iii) The Balkan peoples based their claims for independence or political rights on nationality and used history to prove that they had once been independent but had subsequently been subjugated by foreign powers.

(iv) The Balkan states were fiercely jealous of each-other and each hoped to gain more territory at the expense of the others.

(v) Matters were further complicated because the Balkans also became the scene of big power rivalry. Each power - Russia, Germany, England, Austro-Hungary, etc., were keen on controlling the hold of other powers over the Balkans and each among them was keen to extend its own control over the area.

 Mendel demonstrated that traits can be either dominant or recessive through his monohybrid cross. He crossed true-breeding tall (TT) and dwarf (tt) pea plants. The seeds formed after fertilisation were grown and the plants that were formed represent the first filial or F1 generation. All the F1 plants obtained were tall. Then, Mendel self-pollinated the F1 plants and observed that all plants obtained in the F2 generation were not tall. Instead, one-fourth of the F2 plants were short. From this experiment, Mendel concluded that the F1 tall plants were not true breeding; they were carrying traits of both short height and tall height. They appeared tall only because the tall trait was dominant over the dwarf trait. This shows that traits may be dominant or recessive.

1. Introduction 2. What is Development? 3. Sustainable Development 4. Views of Sustainable Development 5. Concept of Sustainable Development 6. Evolution of SD Concept: 7. The pillars of sustainable development 8. Changing Perspective of SD 9. Approaches of Sustainable Development 10. Sustainability principles 11. Multiple Crises and Sustainable Development 12. Conclusion. OUTLINE

Click on the given link for project:

<a data-ved="2ahUKEwiDv9Gd7O_tAhWaAHIKHSWWCAAQFjAPegQIDxAC" href="https://www.slideshare.net/KuldeepMishra15/sustainable-development-53121161" ping="/url?sa=t&source=web&rct=j&url=https://www.slideshare.net/KuldeepMishra15/sustainable-development-53121161&ved=2ahUKEwiDv9Gd7O_tAhWaAHIKHSWWCAAQFjAPegQIDxAC" rel="noopener" target="_blank">Sustainable development - SlideShare</a>

Dwarfs - Smaller stars are called dwarf stars. Red and yellow stars are generally called dwarfs. A brown dwarf is one that never quite got large enough for nuclear fusion to occur. A white dwarf is the remnants of the collapse of a red giant star.

Below you will get a link to download the official books and Notes from CBSE for Class 10 IT CODE 402 2021. These notes and books provided below are official and the link is also official. You can download it with a single click this will surely help you in the preparation of your examination.

<a href="http://www.cbseacademic.nic.in/web_material/Curriculum21/publication/secondary/Employability_Skills10.pdf">Employability Skills Class 10 Book PDF by CBSE ( Download Now )</a>

<a href="http://www.cbseacademic.nic.in/web_material/Curriculum21/publication/secondary/X_Emplobility_Skills_Combined_book.pdf">Employability Skills Class 10 Notes PDF by CBSE ( Download Now )</a>

<a href="http://cbseacademic.nic.in/web_material/Curriculum21/publication/secondary/402-IT_ClassX.pdf">IT Code 402 Class 10 Book PDF 2020-21 By CBSE (Download Now)</a>

Yes it will. Even if half of the convex lens is covered with black paper, the lens will produce a complete image. however the intensity of the image may be less. It can be observed experimentally by using a lighted candle and a convex lens.

Experiment - 

1. Take a lighted candle and place it in front of a convex lens mounted on a plane surface.

2. Move the candle along the axis of the plane to obtain the full image on the screen. Once the full image is observed, mark the position of the candle without moving it.

3. Now cover the lower exact half of the lens with a black opaque paper. Do not change the position of the candle.

4. At this point, you will observe a full image of the candle, but you will find that the intensity is reduced. This is because the covered part of the lens does not allow light to pass through it. So the amount of light reaching the screen is reduced.

Diagram - 

Following are a few advantages of the heating effect of current:

1)The heating effect of current is used in heating appliances such as electric iron, room heaters and water heaters.

2) An electric fuse is an important application of the heating effect of current. The working principle of the fuse is based on the heating effect of current.

3) They are also utilised in electric bulbs and electric lamps to produce light.

Following are the disadvantages of the heating effect of current:

1) When an electric current flows through the conductor, a part of it is converted into heat energy. This is a waste of energy.

2) The heat produced can damage the insulation and other electrical components, or even cause a fire

3) Reduces the life of several components in the circuit

4) An additional cooling system needs to be added to the circuit to counter the heating effect. This adds to the cost.

• Easy data entry and operations: One of the main advantages of MS excel is that it facilitates smooth and easy data entry. Compared to any other data entry and analyzing tools, MS Excel offers features like Ribbon interface, a set of commands used to perform certain operations. Ribbon consist of many tabs, which again consist of many command groups and their buttons. You can select the commands by clicking the related button and perform operations very easily.

• Accurate comparisons and analysis options: MS Excel provides many analytical tools for the accurate analysis and comparison of large amounts of data. The advanced sorting and filtering techniques allows you to sort out large amount of data so that it will be easier for you to find out the required information. Also, filtering removes unwanted or repeated data and helps to save time and effort.

• Allows graphical representation of data: MS Excel allows you to create the visual representation of data and information. The data can be visually displayed in the form of bar charts, column charts and graphs. It automatically revises the charts and graphs, once the data gets modified. Tables help to classify different entities according to their characteristics and features.

• Compatible with other business applications: Since the recent versions of MS Excel is compatible with many other business applications like MS office, other web applications etc., it allows you to import excel data to other applications. Also, the cloud computing facility helps to update and upload your excel document from all locations, which can be accessed later through various devices like smartphones, tablets, laptops etc.

• Ready to use formulas: MS Excel performs all mathematical and logical functions like addition, subtraction, multiplication, division, average, sum, mod, product etc. Excel provides many formulas that helps you to solve both simple and complex calculations.

  The potential difference between two points is said to be 1 volt if 1 joule of work is done in moving 1 coulomb of electric charge from one point to another.

1.Statue of liberty is being offered homage by the people passing by the train. The men who travel by train are Americans and Europeans.

2.Statue of liberty is explained. It holds en enlightenment torch in the left hand and on the right hand, it has the Rights of the Man.

3.The symbols associated with the absolutist institutions and its shattered remains are seen.

4.The development path is taken by the people of the world. Peace and prosperity take a major place in the minds of the people.

Developed countries want developing countries to liberalise their trade and investment because then the MNCs belonging to the developed countries can set up factories in less-expensive developing nations, and thereby increase profits, with lower manufacturing costs and the same sale price.

In my opinion, the developing countries should demand, in return, for some manner of protection of domestic producers against competition from imports. Also, charges should be levied on MNCs looking to set base in developing nations.

The elimination method is used to solve linear equations in two variables, where one of the variables is removed or eliminated. This method is sometimes more comfortable and convenient than the substitution method. Here are the notes provided with the complete steps to solve such linear equations where two variables are used.

In another classification, there are three different algebraic methods to solve simultaneous linear equations. These methods are namely:

1. Substitution method
2. Elimination method
3. Cross-multiplication method

There are many situations which can be mathematically described by two equations that are not in the linear form. But we alter them so that they are reduced to a pair of linear equations. In this article, you will learn how to solve linear equations using the elimination method.

The substitution method is the algebraic method to solve simultaneous linear equations. As the word says, in this method, the value of one variable from one equation is substituted in the other equation. In this way, a pair of the linear equation gets transformed into one linear equation with only one variable, which can then easily be solved. Before moving to solve the linear equations using the substitution method, get an idea on what the algebraic method and graphical method is.