altimeter shows the aircraft’s altitude above sea-level by measuring the difference between the pressure in a stack of aneroid capsules inside the altimeter and the atmospheric pressure obtained through the static system. It is adjustable for local barometric pressure which must be set correctly to obtain accurate altitude readings. As the aircraft ascends‚ the capsules expand and the static pressure drops‚ causing the altimeter to indicate a higher altitude. The opposite effect occurs when descending
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years scientists have become interested in attempting to understand just how various weather extremes and changing patterns affect our health. According to the doctors cold weather‚ thunderstorms can trigger asthma attacks. Falling barometric pressure‚ a sudden drop in temperature – these weather changes may trigger headaches in people already susceptible to them. And it appears that stable weather may help reduce the incidence of migraines. Research supports the theory that changing weather triggers
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Pressure In Gases Experiment Hypothesis: Using the recommended tire pressure will provide better gasoline mileage. When the tire pressure is lower than the recommended value‚ the surface contact area between the tire and the road is greater. This will cause greater friction and more energy is required to move the car. As a result‚ more gasoline will be consumed. When the air pressure of a car’s tire is higher than the recommended value‚ the contact area between the tire and the road is reduced.
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Yidi Wang (Joseph) WR 98 Summary of “College Pressures” In the article “College Pressures‚” William Zinsser analysis the four reasons which cost pressures on college students: economic pressure‚ parental pressure‚ peer pressure‚ and self-induced pressure. All college students are under the shadow of these four kinds of pressure. The pressure is so heavy that current college students couldn’t enjoy their college life. Zinsser first cites some messages from a students and the dean to show how
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in the equatorial with a low atmospheric pressure. There are light winds‚ variable winds‚ abundant cloudiness‚ and much precipitation. They are also breeding grounds for hurricanes. Secondly‚ there are the Horse latitudes located at 30 with high atmospheric pressure. There are light and variable winds. Fair weather with little precipitation and goes across the major deserts of the world. Next‚ there are the Polar fronts located at the 60 with low atmospheric pressure. There are variable winds that
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external pressure. In normal conditions‚ pressure exerted on the surface of a liquid is the atmospheric pressure. If this atmospheric pressure is reduced on the surface of a liquid‚ by some means‚ then the liquid will start boiling at lower temperature‚ because of reduced pressure. This basic principal of boiling of liquid at lower temperature by reducing the pressure on its surface is used in steam jet refrigeration system. The boiling point of pure water at standard atmospheric pressure of 760 mm
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Synthesis Essay: Pressures of Society My topic focuses on societal pressures on celebrities and people. While research may confirm that both celebrities and people have the same problems‚ you can’t help but notice that celebrities are more judged. This is a highly controversial topic because we are so quick to judge someone based on their actions without really knowing them. While some people think celebrities are a bad influence some still think they can also have some benefits to the community
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reason for making the levels of water the same inside and outside of the Erlenmeyer flask while it was submerged in cold water? The reason for making the levels of water the same inside and outside of the Erlenmeyer flask so that the atmospheric pressure inside the Erlenmeyer flask is equal to the outside. 3. What are the possible sources of error of this experiment? • The water level in the flask is not the same with the outside. • The Erlenmeyer flask wasn’t
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S t ud y G ui de Geography Grade 11 Contents Contents General Introduction ............................................................................................ 1 Introduction to geographical skills and techniques................................................ 2 Unit 1 Mapwork skills ........................................................................................... 2 Unit 2 Working with 1:50 000 topographic maps .................................................... 7
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SECTION - A 1. Name the technique to separate [1] (a) Salt from Sea – water (b) Butter from curd 2. Define velocity. [1] 3. What do you mean by free fall? [1] 4. Mention any 2 advantages of using Italian bee variety in honey production. OR (a) Identify soluble and solvent in the following solutions: [3] (i) Aerated drinks (ii) Tincture of iodine (iii) Lemon water (b) State the principle of each if the following methods of separation of mixtures
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