x Biology 11 Ms. Zwart 06.09.13 The Cooling Curve of Water Variables: Independent Variable: The independent variable is heat; we measure the temperature with a thermometer‚ which has a systematic error of ± 0.5 °C. Dependent Variable: The dependent variable is time; we know when 30seconds pass with the use of a stopwatch‚ which has a systematic error of ± 1 second. Controlled Variables: The controlled variables used in this experiment are; a 400ml beaker with the systematic error
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Blake Martinez November 1‚ 2013 Lab Write-up Group: Blake‚ Eric‚ Nadia‚ Fidelia Newton’s Third Law Purpose: The purpose of this lab is to calibrate two force sensors properly. Observe the directional relationship between force pairs. Observe the time variation of force pairs. We need to explain Newton’s third law in simple language. Materials: LabPro Interface Two Vernier force sensors .5kg mass String Rubber band DataMate Program Preliminary: 1. The force of the window
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EXERCISES on Application of Newton 2nd Law-(1st PART) 56. Two boats pull a 75.0-kg water skier‚ as illustrated in Fig. 4.32. (a) If each boat pulls with a force of 600 N and the skier travels at a constant velocity‚ what is the magnitude of the retarding force between the water and the skis? (b) Assuming that the retarding force remains constant‚ if each boat pulls with a force of 700 N‚ what is the magnitude of the acceleration of the skier? Figure 4.32 Double tow. See Exercise 56. 57. (a)
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and Performance Test of Solid Desiccant Cooling System Md. Hasan Ali1‚ A. N. M. Mizanur Rahman2‚‚*‚ N. U. I. Hossain2‚ K. S. Islam2 1 Department of Energy Technology‚ 2 Department of Mechanical Engineering Khulna University of Engineering & Technology‚ Khulna-9203‚ Bangladesh ABSTRACT Apart from the conventional cooling‚ there are other methods that are employed for specific applications. Evaporative cooling comes under this category. This type of cooling has a great potential to provide thermal
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2013 The Life and Works of Sir Isaac Newton Sir Isaac Newton‚ (1642-1727)‚ mathematician and physicist‚ was one of the greatest scientific minds of all time. Sir Isaac Newton was born at on January 4th (December 25th old calendar) at Woolsthorpe‚ a farmstead‚ in Lincolnshire. Woolsthorpe is the place where he worked on his theory of light and optics. This is also believed to be the site where Newton observed an apple fall from a tree‚ inspiring him to make his law of universal gravitation. He entered
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Isaac Newton was an English mathematician and physicist‚ considered one of the greatest scientists in history. He made important contributions to many fields of science. His discoveries and theories laid the foundation for much of the progress in science. Newton was one of the inventors of a mathematics called calculus. He also solved the mysteries of light and optics‚ formulated the three laws of motion‚ and derived from them the law of universal gravitation. Newton was
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Sir Issac Newton Newton was born on December 25‚1642. He was an English mathematician and physicist‚ considered one of the greatest scientist in history‚ who made important contributions to many fields of science. His discoveries and theories laid the foundation for much of the progress in science since his time. Newton was one of the inventors of the branch of mathematics called Calculus. He also solved the mysteries of light and optics. Formulated the three laws of motions‚ and derived from
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Introduction Isaac newton—English astronomer‚ physicist‚ mathematician‚ and scientist—became interested in science as a boy and even invented several devises while he was still young. He attended Cambridge University and later taught there. In Optics‚ newton published his principles of light and colour‚ and in his mathematical principles of natural philosophy (also known as the principia)‚ he discussed the laws of motion and the theory of gravity. Besides his scientific study‚ he spent much time
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How effective is sweating at cooling you down? DC The temperature of each test tube that contains water which had different conditions that was measured each minute Temperature (±0.05 °C) Minute Dry Dry/Windy Wet Wet/Windy 1 77 82 70 76 2 75 80 64 70 3 72 76 59 65 4 69 73 55 60 5 67 71 53 57 6 65 68 50 53 7 64 66 48 51 8 63 64 46 48 9 61 61 44 46 10 59 60 42 44 11 58 58 41 43 12 56 56 40 41 13 55 55 39 40 14 54 53 38
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| Chemistry Lab Report | Constructing Heating/Cooling Curve | | Salman Ishaq 12-E | 1/27/2013 | | BACKGROUND As energy flows from a liquid‚ its temperature drops. The entropy‚ or random ordering of its particles‚ also decreases until a specific ordering of the particles results in a phase change to a solid. If energy is being released or absorbed by a substance remaining at the same temperature‚ this is evidence that a dramatic change in entropy‚ such as a phase change‚ is occurring. Because
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