Mechanical Energy Essays - Energy Conversion, Energy Development

Mechanical Energy Have you ever wondered how a jet aircraft lifts its tremendous weight off the ground, or what gives a runner the stamina to reach the finish line in a race? In order to answer all these questions we must talk about the transformation of one sort of energy into another. The jet aircraft gets its power from jet turbines. These powerful jet engines create a high-pressure stream of very hot gases that push the aircraft forward as they leave the engine. This is an example of heat being transformed into movement. This is sometimes described as Mechanical Energy. However, this transformation could not take place without the fuel that the aircraft gets within its wings or fuselage. Fuel is considered a chemical energy. Fuel can take the form of gases, solids or liquids. When fuels combine with oxygen from the air, they release their stored energy as heat. We recognize this process as burning. The individual relies on food for fuel which contains energy-giving substances that our bodies can store until we need this energy to use our muscles. When we do use our muscles within us, we may not always be sure that heat is given off. Our bodies do not burst into flames but the perspiration on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects mechanical energy from the winds that sweep along the water. This energy has been produced by the sun which warms the earth's surface and sets the air above in motion. The sun's heat comes to the earth as a form of radiant energy. When the heat reaches the surface of the earth, it causes the land or seas to rise in temperature. The sun is very hot. Infact, the center of the sun can reach temperatures of up to 27 million degrees Fahrenheit. This is because of another kind of energy reaction where new substances are continually being created as others are being destroyed. This reaction is known to us as the Nuclear Reaction. Today we are trying to imitate this reaction in improving our energy supply. Scientists have calculated that the sun has enough fuel to go on producing energy at its present rate for about five billion years. On earth man-made nuclear reactions are used to produce a form of power we know as electricity. Electricity can be transformed into other kinds of energy such as heat, light and radio waves. Humans have also used the idea of nuclear reactions as a type of weapon. We call this powerful weapon the Atomic Bomb. Electrical energy can also be used to produce laser beams. This involves energy being concentrated to a specific narrow point where the impact of so much power creates heat able to cut through metals. Bibliography Discovering Energy, Frazer, Frank Trewin Copplestone Books Ltd, 1981. Encyclopedia Britannica, Vol. 6 Encyclopedia Britannica, 1979.

Essay Writing Sample Questions - How To Get A Good Write Up With Them

Essay Writing Sample Questions - How To Get A Good Write Up With ThemIn case you are doing a full-fledged academic career, then essay writing sample questions are the most important part of your coursework. As the essay writing is the key to your success, you need to be perfect in it if you want to have high grades and even top honors. By studying well, you can get higher marks by having a hard work as well as a disciplined approach in essay writing.To get the best out of essay writing sample questions, you need to know the tips of the subject. You should also study some classics of the subject for better understanding. The best way to get a good grasp of the subject is to take a class that will offer essay writing as one of the subjects or as a required.You can also take an essay writing class in the college level if you want to learn more about the subject. The subjects such as history, philosophy, English and social sciences are among the most popular subjects for the students tod ay. Moreover, this subject offers a lot of challenges for students especially in essay writing. Therefore, it is recommended that you always make your assignments more challenging.In order to ace the essays at the regular exams, you need to practice on writing even more. The best thing to do is to take a few classes in the colleges or in the universities. You need to take a class that will provide your more advanced and expert opinion to improve your level. If you want to improve your skill and knowledge, then you need to study well so that you get ahead in the subject of your choice.The essay writing sample questions can be easier to comprehend if you are able to clearly understand the main and supporting arguments and facts. You can utilize some of the available writing samples to help you develop your skills. Just search for writing samples on the internet and you will get many articles and essays from different famous and published writers.It is better for you to study some good writing samples for essay writing sample questions. Once you are able to understand it well, you can start writing the answers. Once you are ready with the answers, you can take the help of a reading guide that will help you write more effective and correct answers.One thing to note about the writing sample questions is that it is written in such a way that it is able to instruct the reader to read the essay from beginning to end. Since the objectives of the essay is to teach the reader on what to expect or not, then the objectives are of the best interest for the student. This makes the essay writing sample questions more of a challenge. The assignment can either be easy or difficult depending on the talent and skill of the student.