Essay _ Airplane The invention of the airplane had a great impact on society and the world. It change the way people travel. Transportation became easier and faster. Before the airplane was invented people had to use steamboats‚ hot air balloons‚ trains‚ and road vehcile in order to travel either across the country or around the world. What is an airplane exactly? An airplane is an aircraft but the only difference is that an airplane is heavier. It has fixed wings and is power by
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Speed of Sound in Air By: James Chen Lab Partner: Jin Zhang and Jake Salpeter Phys 130‚ Lab section: EE11 TA: Khaled Elshamouty Date of lab: October 29‚ 2013 Introduction Sound is a longitudinal (compressional) wave caused by a vibrating source. In this experiment‚ we use standing sound waves created by the tuning forks to determine the speed of sound in air in a tube when it reaches different resonances. In this lab we focused primarily on using standing sound waves (compressional
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Speech on air pollution Air pollution is harmful to the environment. I would like to talk about the harmful effects of air pollution. Air pollution has to stop. It is harming humans and our environment. People are causing it‚ and making it worse for them selves. I will talk about other reasons why it must stop. Air pollution is a chemical in the air that harms humans and other living things. The atmosphere is complex‚ it has natural gases that support life. Ozone depletion due to air pollution
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Air pollution has become one of the most important concerns of the local authorities of Latin- American cities. Bogotá‚ like as other urban centers in South America such as Sao Paulo‚ Mexico City and Santiago de Chile‚ shows significant levels of air pollution‚ levels that may represent a high risk for the population’s health and certainly a reduction in the quality of life of its inhabitants. Bogotá‚ capital of Colombia‚ is one of the largest cities of Latin America; with a population of around
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Air Traffic Control Why do we need it? - Its Objective. 1. Aviation has come a long way since the days when safe operation between aircraft was based purely on the ’SEE AND BE SEEN’ principle. With the aircraft closing speeds in excess of 1000 mph‚ and increasing density of air traffic‚ the impracticability of reliance upon such a system is obvious. 2. Hence the need for air traffic control service has arisen. The need to safeguard passengers‚ crew and aircraft is now met by ground based infrastructure
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Causes of air pollution: Unwanted material present in air is referred as air pollution. The causes of air pollution may be * Natural process: For instance volcanic eruption and forest fire because of lightening. * Man- made process: for instance combustion of fossil fuels. Most of the air pollution is man – made. In metropolitan areas‚ combustion of petrol and its byproducts result in release of air pollutant. Incomplete combustion releases a toxic compound called carbon monoxide in to
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Air Pollution in the World OUTLINE I. Nowadays air pollution became very important problem in our world. II. Air pollution is caused by 3 factors. a. Factories b. Cars c. Human activities III. These three main problems listed above cause huge effects on our planet. a. Global warming b. Acid rains c. Health problems IV. Regarding all the factors and the problems they cause‚ we should start changing our world.
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AIR QUALITY : Air pollution comes from many different sources: stationary sources such as factories‚ power plants‚ and smelters and smaller sources such as dry cleaners and degreasing operations; mobile sources such as cars‚ buses‚ planes‚ trucks‚ and trains; and naturally occurring sources such as windblown dust‚ and volcanic eruptions‚ all contribute to air pollution. Air Quality can be affected in many ways by the pollution emitted from these sources. These pollution sources can also emit a
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unattended. PROCEDURE: A. Lighting a Burner (see page 7) 1. Close air adjustment. Open air adjustment by rotating barrel 2 times. 2. Close gas adjustment valve. Open gas adjustment valve at least 2 times. 3. Strike match and hold flame at the top of the burner. 4. Turn gas on at main gas valve. 5. Adjust height of flame to 8-10 cm. (flame may be yellow or blue.) 6. Close air vents for luminous yellow flame. Open the air adjustment for blue and double-cone blue flames. 7. Draw burner and
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Thesis statement: Air Asia flew 33.8 people in 2012. Body: I. More than 1 million of passengers have used the service by Air Asia. A. The passengers increased to 13 per cent for Air Asia Airplanes in year 2011. B. The percentages for load factor remain the same since last year. II. 22 new aircraft was added with Air Asia affiliates. A. Air Asia’s affiliates include Malaysia AirAsia‚ Thai AirAsia and Indonesia AirAsia. B. The increasing of passenger is to add
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