Modulus of elasticity: The ratio of the stress applied to a body to the strain those results in the body in response to it. The modulus of elasticity of a material is a measure of its stiffness and for most materials remains constant over a range of stress. . Material | Elastic Modulus | | MPa | psi | Steel | 200‚000 | 30‚000‚000 | Poisson ratio It is the negative ratio of transverse to axial strain. In fact‚ when a sample object is stretched (or squeezed)‚ to an extension (or contraction)
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IMPROVEMENT OF COMMUNICATION SYSTEMS First of all‚ humans always need tı communicate with each other. Hundres years ago‚ we had just a few communication systems like raven‚ mail‚ smoke etc. These systems were too slow. Important news were reaching to people too late. With the invention of telgraph‚ transportation times became shorter. This was the first step of modern communication. Second half of 20th century with the improvement of tecnology‚ we invented new communication systems like cell
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Họ và tên: DƯƠNG MINH CHÂU Lớp: 5c-12 Topic: HOW DO YOU LEARN ENGLLISH VERY WELL? Good morning. My name’s Minh Chau. I’m the new Finance Manage. I’m going infrom you about “How do you learn English”. The purpose of this talk is to update you on methodology English. I shall only take 10 minutes of your time. The subject can be looked at under the following heading : listening‚‚ speaking‚ reading‚ writing.If you have any questions‚ I’d glad to answer any
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Hà ID: 1111120089 TOPIC: Advantages and disadvantages of living in a city and in the countryside. The rapid economic growth in many countries has led to widening gap between cities and rural areas. One of the most controversial issues rising today is which place is better to live. I think everything has 2 sides‚ both the city and the countryside have the advantages and disadvantages. It isn’t deniable that living in such a big city has a lot of convenience. People can approach the modern technology
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town and Big cities Some people prefer a small town over a big city‚ others prefer a big city over a small town. Why? Big cities and small towns have several differences‚ they also have a few similarities. Including that they both have their advantages and disadvantages. However‚ I personally like to live in a small town. There are certain aspects and qualities that one cannot bear living in a big city. Some people who live in big cities think it’s the best place for them. Big cities have numerous
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Country Life and City Life Carin Ninni ENG 121: English Composition 1 Professor Casey 8/6/2012 While city life brings many social opportunities‚ country life can provide the best of both worlds. “There are many advantages and disadvantages to living in the country and living in the city”. (http://www.oppapers.com/essays/Compare-And-Contrast-City-Living/452075) Depending on what kind of lifestyle a person wants to lead‚ decides on where they should live; a fast paced‚ busy lifestyle‚ live
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small town and others like to live in a big city. In my opinion‚ I would prefer to live in a big city because living in a big city has more advantages than living in a small town. Living in a big city is more convenient because in a big city there are many facilities for living‚ recreation‚ and health care. For instance‚ a big city usually has an integrated transportation infrastructure connecting all areas of the city. As a result‚ people living in a big city can commute conveniently using public
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challenges of living in mega cities and evaluate the responses to these challenges A Mega City is defined as a city home to more than 8 million people‚ the urban sprawl of these cities is continuing to dominate the landscapes of these major cities. These cities have been unable to cope with the rapid increase of people moving to these urban areas‚ in some mega cities this is up to 1 million people per day‚ leading to a lack of supplies and services‚ becoming a major characteristic of these cities. The
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THE ADVANTAGES AND DISADVANTAGES OF LIVING IN A CITY Have you ever thought of the advantages and disadvantages of living in cities? It may seem at first that living in cities have only good sides but further consideration shows that it also got negative sides. Frankly speaking‚ living in a big city has its pros and cons as well. Opinions about big cities are divided. To start with‚ cities provide you with a lot of facilities which are close at your door step. In Kuala Lumpur for example‚ thanks
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Lao people movement at country side to Vientiane because a city means a large and important town. Some people say that city is the best place to live. Nowadays‚ more and more people are choosing to live in the city. They are willing to leave their homes and migrate to the city because there are plenty of job opportunities and entertainment in the city. One has an easy access to all the amenities of life. Additionally‚ city centers are the places where all the business‚ educational‚ official and trade
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