...Slipping TA: Dana Baylis Alyssa Lucero Group Members: Leslie, Sean, Gustavo, Eric Introduction In this lab, the effects of an object rolling down a ramp without slipping were studied and the role of friction on an objects velocity was witnessed. This was accomplished by rolling three objects, a hoop, a sphere, and a disk down a ramp while taking measurements with a Pasco motion sensor and special data acquisition software. Methods The length and change in height of the ramp were measured with a meter stick and used with basic trigonometry to determine ϴ, the ramps angle. Then the motion sensor was adjusted and set to wide beam mode with a pulse rate of 50 Hz. Next, a box was placed at the bottom of the ramp to stop the object. Three objects were then rolled down the ramp, a sphere (billiard ball), a hoop, and a disk, and measurement were taken for each of them. Analysis and Conclusion The obtained measurements were used to calculate acm, and were used for further analysis; these values can be seen in Table 1, below. Table 1. Data Obtained for Each Object Object | ti (s) | tf (s) | vf (m/s) | xi (m) | xf (m) | a (m/s2) | Sphere | 0.6948 | 1.4823 | 1.11 | 0.241 | 0.8335 | 0.966 | Hoop | 0.855 | 2.1665 | 1.36 | 0.117 | 0.993 | 0.674 | Disk | 0.5937 | 1.7245 | 1.38 | 0.123 | 1.0215 | 0.887 | Using the values obtained for a and Equation 1 from the lab manual, k was calculated for each object and then compared to the given k values for each to determine the percentage...
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... Index Objective…… ………………………………………………….…………...2 Introduction…………………………………………………………………..2 Theory…………………………………………….………………………..3, 4 Apparatus……………...…………………………………………………….5 Procedure……….…………………………………………………………..6 Results……………………………………………………………….…...7 - 11 Discussion……………………………………………………………….11, 12 Conclusion……………………………………………………………….…12 Reference…………………………………………………………………..12 Objective The objective of this experiment is to determine the moment of inertia of a flywheel and axle by experiment and compare it with the theoretical value. Introduction A flywheel is a heavy shaft-mounted rotating disc that absorbs and stores twisting or spinning motion and then releases it as rotational kinetic energy to provide motion to a stationary or nearly stationary object. [1] Flybrids (a variation of regular electromechanical hybrids) use a flywheel instead of a battery to store regenerative braking energy. This stored energy is used to initially propel (or assist the vehicle’s internal combustion engine) for powering and maintaining motion of the vehicle.[1] Application of a flywheel Flywheels can be used to store energy and used to produce very high electric power pulses for experiments, where drawing the power from the public electric network would produce unacceptable spikes. A small motor can accelerate the flywheel between the pulses [2].The phenomenon of precession has to be considered when using flywheels in moving vehicles. However in one...
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...LAB - RADIAL FLOW REACTION TURBINE Objectives: To measure volume flow rate, input head, hydraulic input power, torque, brake power & turbine efficiency when the brake force is increase Theoretical Background: Radial flow When a fluid flows radially inwards or outwards from a centre, between two parallel planes as in Fig. 6.21, the streamlines will be radial straight lines and the streamtubes will be in forms of sectors. The area of flow will therefore increase as the radius increases, causing the velocity to decrease. Since the flow pattern is symmetrical, the total energy per unit weight H will be the same for all streamlines and for all points along each streamlines if we assume that there is no loss of energy. [pic] Figure 6.21 If v is the radial velocity and p is the pressure at any radius r, H = p/ρg + v²/2g = constant …………………………(6.31) Applying the continuity of flow equation flow and assuming that the density of the fluid remains constant, as would be the case for the fluid, Volume rate of flow, Q = area x velocity = 2πrb x v where b is the distance between the planes. Thus, v = Q/2πrb and substituting in equation………(6.31) p/ρg + Q²/ 8π²r²b² = H p = ρg [ H – ( Q²/ 8π²b² ) x ( 1/r² )] …………………..(6.32) If the pressure p at any radius r is plotted in Fig. 6.21(c), the curve will be parabolic and is sometimes referred to as Barlow’s curve. If the flow discharges to the atmosphere at the...
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...you need a base lamp. Our materials is eco-friendly and our experiment is also harm free to the environment that does not use any harmful smoke that can harm the environment. TABLE OF CONTENTS ABSTRACT INTRODUCTION a. background of the study b. statement of the problem c. significance of the study e. scopes and limitations REVIEW OF RELATED LITERATURES MATERIALS AND METHODS RESULTS AND DISCUSSION SUMMARY AND CONCLUSION RECOMMENDATION APPENDIX INTRODUCTION A. Background of the study 1.5 billion people do not have access to electricity, 585 million of them living in Sub-Saharan Africa and 404 million in India. Three billion people, almost half of the world's population rely on biomass, such as wood, charcoal, and dung for cooking and heating purposes. Sub-Saharan Africa is an especially dire case, Only 31% of the population has access to electricity and the Sub-Saharan Afican population (excluding South Africa) of 791 million consumes as much energy annually as New York State, a population of 19.5 million,...
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...PHYSIC AL CONSTANTS CONSTANT Speed of light Elementary charge Electron mass Proton mass Gravitational constant Permeability constant Permittivity constant Boltzmann’s constant Universal gas constant Stefan–Boltzmann constant Planck’s constant Avogadro’s number Bohr radius SYMBOL c e me mp G m0 P0 k R s h 15 2p"2 NA a0 THREE-FIGURE VALUE 3.003108 m/s 1.60310219 C 9.11310231 kg 1.67310227 kg 6.67310211 N # m2/kg 2 1.2631026 N/A2 1H/m2 8.85310212 C 2/N # m2 1F/m2 1.38310223 J/K 8.31 J/K # mol 5.6731028 W/m2 # K4 6.63310234 J # s 6.0231023 mol21 5.29310211 m BEST KNOWN VALUE* 299 792 458 m/s (exact) 1.602 176 4871402 310219 C 9.109 382 151452 310231 kg 1.672 621 6371832 310227 kg 6.674 281672 310211 N # m2/kg 2 4p31027 (exact) 1/m0c2 (exact) 1.380 65041242 310223 J/K 8.314 4721152 J/K # mol 5.670 4001402 31028 W/m2 # K4 6.626 068 961332 310234 J # s 6.022 141 791302 31023 mol21 5.291 772 08591362 310211 m *Parentheses indicate uncertainties in last decimal places. Source: U.S. National Institute of Standards and Technology, 2007 values SI PREFIXES POWER 1024 1021 1018 1015 1012 109 106 103 102 101 100 1021 1022 1023 1026 1029 10212 10215 10218 10221 10224 THE GREEK ALPHABET PREFIX yotta zetta exa peta tera giga mega kilo hecto deca — deci centi milli micro nano pico femto atto zepto yocto SYMBOL Y Z E P T G M k h da — d c m μ n p f a z y Alpha ...
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...ACKNOWLEDGEMENT SYNOPSIS LIST OF FIGURE CHAPTER 1. INTRODUCTION...........………………………...……..………………………........1 1. VIRTUAL INSTRUMENTATION 1 2. LabVIEW 2 3. PIN ON DISC INSTRUMENT 3 2. LITERATURE SURVEY……………………..…………………………..………….5 3. PROBLEM DEFINITION AND OBJECTIVE……………………………......…….8 3.1 PROBLEM DEFINITION 8 3.2 OBJECTIVE 8 4. METHODOLOGY………………………………………………………….………....9 5. PROCEDURE AND RESULTS…………………………………...…..……10 5.1 Calibrating the Pin on Disc Instrument 10 5.2 Conversion of Time to Sliding Distance 11 5.3 Exporting Values to Spreadsheet File 12 5.4 Steps to Run the Program 13 6. CONCLUSION………………..………………………………..….…….....…...…...15 BIBLIOGRAPHY..........................................................................................................16 ACKNOWLEDGEMENT We would like to express our sincere gratitude and profound thanks to Dr. R. Rudramoorthy, Principal, PSG College of...
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...Chapter 1, Introduction CHAPTER 1 Conceptual Problems C1. A room in a house has a floor area of 120 ft2. Which of the following is most likely the approximate volume of the room? a. 3 m3 b. 30 m3 c. 300 m3 d. 3 000 m3 C2. When SI units are plugged into an equation, it is found that the units balance. Which of the following can we expect to be true for this equation? a. The equation will be dimensionally correct. b. The equation will be dimensionally correct except sometimes in cases when the right hand side of the equation has more than one term. c. The equation will not be dimensionally correct. d. All constants of proportionality will be correct. C3. How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons and protons? Think of your answers in terms of order of magnitude. a. about a decade b. about a century c. about a thousand years d. since Aristotle C4. Consider the sine of any angle between 30° and 40°. If the angle were doubled, what would happen to the sine of the angle? a. It would double. b. It would more than double. c. It would increase but be less than double. d. In different cases, it could do any of the above. C5. There are other ways of expressing uncertainty besides significant figures. For example, suppose a quantity is known to have a value between 20.4 and 20.0 and our best estimate of the value is midrange at 20.2. We could write the number as 20.2 +/- 0.2 and say that the number has a 1% uncertainty. We would...
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...Bodybuilding Anaerobic Exercise & Respiration, Muscular Growth and Supplement Intake Ajay Sabhaney, Carlen Ng, Di Wu, Kelei Xu Bodybuilding Page 1 of 59 Table of Contents 1. Introduction 2. The Body & Muscle Groups a. Muscle Growth b. Physical & Psychological Benefits of Exercising 3. Weight Training: Anaerobic Exercise Mechanics & Impact on Muscle Growth a. Energy Transformations During an Exercise b. Investigating Torque in Weight Training c. Muscles Acting as Levers d. Impulse in Weight Training e. Intensity versus Speed 4. Protein Supplementation a. Protein supplementation b. Combining Protein Supplementation 5. Cellular Respiration & Effect on Weight Training a. Glycolysis b. Aerobic Respiration c. Anaerobic Respiration (inc. lactic acid) d. Carbohydrate Loading 6. Creatine Supplementation a. An Introduction b. Lab: Effect of Phosphocreatine on Lactic Acid 7. Anabolic-Androgenic Steroids a. Reactions within the Body involving steroids b. Side Effects of Steroid Intake c. Detecting Steroids in the Human Body 8. Conclusion 9. Works Cited 10. Miscellaneous Bodybuilding Page 2 of 59 I. Introduction Exercise (essentially any form of physical exertion which results in the contraction of a muscle) has become a widespread interest over the past several years, especially in areas of weight training. While exercise is generally intended to promote good physical health, bodybuilding more specifically concentrates on building muscle mass and many individuals in society...
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...Powder Technology 217 (2012) 148–156 Contents lists available at SciVerse ScienceDirect Powder Technology journal homepage: www.elsevier.com/locate/powtec Numerical modeling of fluid and particle behaviors in impact pulverizer Hirohisa Takeuchi, Hideya Nakamura, Tomohiro Iwasaki, Satoru Watano ⁎ Department of Chemical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan a r t i c l e i n f o a b s t r a c t Numerical modeling of fluid flow and individual particle motion in an impact pulverizer was conducted using a Computational Fluid Dynamics (CFD)–Discrete Phase Model (DPM) coupling model. The impact pulverizer used is a dry system. Its grinding chamber consists of high-speed rotating hammers and a static concavo–convex stator. First of all, calculated results of fluid pressure in the grinding chamber were compared with the experimental ones, showing the both results were in good agreement. The fluid flow in the grinding chamber indicated that the fluid mainly swirled in the direction of the hammer rotation. The fluid flow pattern in the concaves of the stator was also swirling flow, while its velocity was much lower than that in the outside of the concaves. Analyses of the particle motion suggested that the particles were accelerated by the fluid drag force caused by the rotating hammers but not by the impact force from the hammers, resulting in impacts with the static stator at the velocity 1.4 times higher than the tip...
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...Finally, the onset of cavitation showed an average decrease in flow rate of 68% and an average decrease in suction static head of 14.5%. It was concluded that the a single centrifugal pump curve is performing according to the manufacturer curve and that the overall pump curve for pumps in parallel and series can be achieved by combining the individual curves, lastly cavitation did effect flow rate and suction static head. It was recommended that an extra run of the experiment be conducted in future in order to test repeatability. 1. INTRODUCTION 1.1 Background Pumps form an integral part of any piping system, they allow fluid to be moved along the system while overcoming possible losses along the way. A pump is a fluid machine which adds energy to a fluid, which results in an increased pressure of the fluid. 1.2 Problem statement In this experiment the centrifugal pump was to be investigated, including the pump curves of one or more centrifugal pumps connected in series and parallel. The phenomenon of caviation was also observed and examined. 1.3 Objectives The objectives for this experiment were to determine the characteristic pump curve of a centrifugal pump and compare this to the manufacturer’s pump curve; to confirm that the overall pump curve for pumps connected in series and parallel can be obtained from their individual pump curves and finally to examine the phenomenon of cavitation and the effects of flow rate and suction static head on cavitation. 1.4 Approach This experiment...
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...CRST 290 ALL TESTS Click Link Below To Buy: http://hwaid.com/shop/crst-290-all-tests/ • Question 1 4 out of 4 points Apologetics is a branch of theology that provides a rational defense of Christianity. • Question 2 4 out of 4 points The creation model predicts that organisms will remain essentially the same to the present or go extinct. • Question 3 4 out of 4 points Evolutionary theories are scientific and not subject to change • Question 4 4 out of 4 points A set of related hypotheses that are bound together to describe a phenomenon is called a law • Question 5 4 out of 4 points Germany only embraced Darwinian evolution after Hitler and the Nazi's came to power. • Question 6 4 out of 4 points Margaret Sanger, the founder of Planned Parenthood was a promoter of eugenics. • Question 7 4 out of 4 points Hermeneutics is the branch of theology that deals with the defense of doctrine and defense of the Christian faith. • Question 8 4 out of 4 points The scientific method has proven that evolution is an unguided process. • Question 9 4 out of 4 points Which of the following is a good hypothesis to use with the scientific method? • Question 10 4 out of 4 points The best current Creation Model looks like • Question 11 0 out of 4 points Which of the following is a reason(s) why evolution and creation are beyond the scope of empirical science...
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...Neural Networks for Matching in Computer Vision Giansalvo Cirrincione1 and Maurizio Cirrincione2 Department of Electrical Engineering, Lab. CREA University of Picardie-Jules Verne 33, rue Saint Leu, 80039 Amiens - France exin@u-picardie.fr Universite de Technologie de Belfort-Montbeliard (UTBM) Rue Thierry MIEG, Belfort Cedex 90010, France maurizio.cirricione@utbm.fr 1 2 Abstract. A very important problem in computer vision is the matching of features extracted from pairs of images. At this proposal, a new neural network, the Double Asynchronous Competitor (DAC) is presented. It exploits the self-organization for solving the matching as a pattern recognition problem. As a consequence, a set of attributes is required for each image feature. The network is able to find the variety of the input space. DAC exploits two intercoupled neural networks and outputs the matches together with the occlusion maps of the pair of frames taken in consideration. DAC can also solve other matching problems. 1 Introduction In computer vision, structure from motion (SFM) algorithms recover the motion and scene parameters by using a sequence of images (very often only a pair of images is needed). Several SFM techniques require the extraction of features (corners, lines and so on) from each frame. Then, it is necessary to find certain types of correspondences between images, i.e. to identify the image elements in different frames that correspond to the same element in the scene. This paper...
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...Introductory Physics I Elementary Mechanics by Robert G. Brown Duke University Physics Department Durham, NC 27708-0305 rgb@phy.duke.edu Copyright Notice Copyright Robert G. Brown 1993, 2007, 2013 Notice This physics textbook is designed to support my personal teaching activities at Duke University, in particular teaching its Physics 141/142, 151/152, or 161/162 series (Introductory Physics for life science majors, engineers, or potential physics majors, respectively). It is freely available in its entirety in a downloadable PDF form or to be read online at: http://www.phy.duke.edu/∼rgb/Class/intro physics 1.php It is also available in an inexpensive (really!) print version via Lulu press here: http://www.lulu.com/shop/product-21186588.html where readers/users can voluntarily help support or reward the author by purchasing either this paper copy or one of the even more inexpensive electronic copies. By making the book available in these various media at a cost ranging from free to cheap, I enable the text can be used by students all over the world where each student can pay (or not) according to their means. Nevertheless, I am hoping that students who truly find this work useful will purchase a copy through Lulu or a bookseller (when the latter option becomes available), if only to help subsidize me while I continue to write inexpensive textbooks in physics or other subjects. This textbook is organized for ease of presentation and ease of learning. In particular, they are...
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...SENIOR SECONDARY COURSE PHYSICS 1 (CORE MODULES) Coordinators Dr. Oum Prakash Sharma Sh. R.S. Dass NATIONAL INSTITUTE OF OPEN SCHOOLING A-25, INSTITUTIONAL AREA, SECTOR-62, NOIDA-201301 (UP) COURSE DESIGN COMMITTEE CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Maidan Garhi, Delhi MEMBERS Prof. A.R. Verma Former Director, National Physical Laboratory, Delhi, 160, Deepali Enclave Pitampura, Delhi-34 Dr. Naresh Kumar Reader (Rtd.) Deptt. of Physics Hindu College, D.U. Dr. Oum Prakash Sharma Asstt. Director (Academic) NIOS, Delhi Prof. L.S. Kothari Prof. of Physics (Retd.) Delhi University 71, Vaishali, Delhi-11008 Dr. Vajayshree Prof. of Physics IGNOU, Maidan Garhi Delhi Sh. R.S. Dass Vice Principal (Rtd.) BRMVB, Sr. Sec. School Lajpat Nagar, New Delhi-110024 Dr. G.S. Singh Prof. of Physics IIT Roorkee Sh. K.S. Upadhyaya Principal Jawahar Navodaya Vidyalaya Rohilla Mohammadabad (U.P.) Dr. V.B. Bhatia Prof. of Physics (Retd.) Delhi University 215, Sector-21, Faridabad COURSE DEVELOPMENT TEAM CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Delhi MEMBERS Prof. V.B. Bhatia 215, Sector-21, Faridabad Prof. B.B. Tripathi Prof. of Physics (Retd.), IIT Delhi 9-A, Awadhpuri, Sarvodaya Nagar Lucknow-226016 Sh. K.S. Upadhyaya Principal Navodaya Vidyalaya Rohilla Mohammadabad, (U.P.) Dr. V.P. Shrivastava Reader (Physics) D.E.S.M., NCERT, Delhi EDITORS TEAM CHAIRMAN Prof. S.C. Garg Former Pro-Vice Chancellor IGNOU, Delhi MEMBERS Prof. B.B. Tripathi Prof...
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...THE UNIVERSE When we look up in the night sky we can see the stars and the moon. And because it is natural to be curious, we ask questions and we want answers. When our view was limited by what our eyes could see, the sky was our Universe. Then the telescopes deepened our view, photography enhanced it, and spectroscopy broadened it. The universe grew from a sky of stars to a realm of galaxies, to an expanding universe of galaxies. Many people believe that nature, the sun and moon, the star, even human beings never had a beginning. There is an endless, external cycle of birth, life and death that constantly repeats itself and it never began and will never end. In the Book of Genesis in the Bible, it was written that at first the world did not exist and that God is the only one who existed. So He created the world. The universe is the totality of everything that has ever existed. It is so large that it contains billions of stars, and all of the planets, galaxies and all of space. The study of the universe is called Cosmology. Traditional Views about the Universe 1. Geocentric Universe Greeks believed that the earth was a sphere that stayed motionless at the center of the universe or the geocentric (Earth-centered) view. Orbiting the earth were seven wanderers (planetai in Greek) including the sun, the moon and the known planets, Mercury, Venus, Mars, Jupiter and Saturn. Greece was centered as the “Golden Age” of early astronomy. Claudius Ptolemy created the book Almagest...
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