...Momentum Visit the website http://phet.colorado.edu/en/simulation/collision-lab & complete the following: 1. In the green box on the right side of the screen, select the following settings: 1 dimension, velocity vectors ON, momentum vectors ON, reflecting borders ON, momenta diagram ON, elasticity 0%. Look at the red and green balls on the screen and the vectors that represent their motion. a. Which ball has the greater velocity? b. Which has the greater momentum? 2. Explain why the green ball has more momentum but less velocity than the red ball (HINT: what is the definition of momentum?). 3. Push “play” and let the balls collide. After they collide and you see the vectors change, click “pause”. Click “rewind” and watch the momenta box during the collision. Watch it more than once if needed by using “play”, “rewind”, and “pause”. Zoom in on the vectors in the momenta box with the control on the right of the box to make it easier to see if necessary. a. What happens to the momentum of the red ball after the collision? b. What about the green ball? c. What about the total momentum of both the red and green ball? 4. Change the mass of the red ball to match that of the green ball. a. Which ball has greater momentum now? b. How has the total momentum changed? c. Predict what will happen to the motion of the balls after they collide. 5. Watch the simulation, and then pause...
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...we created four graphs that illustrated horizontal and vertical velocity, as well as horizontal and vertical position all compared to time. Data Our ball was in flight for about .48 s and had an initial velocity of 3.14 m/s. In our vertical velocity verse time graph, I calculated the slope of the line to be 9.8 m/s^2. I am very happy with this result because it is very close to the real acceleration of gravity. Finally, our measured value of time of flight and calculated value deviated by .006s. This was also really cool to see. Sources of Error We did not take air resistance into consideration in this lab. As the ball is flying through the air, it is being slowed down by the air drag. This could have made our measured value of time of flight slower than it would have been in a situation with no air resistance. Post Lab Questions 4. As the ball the rises, the vertical component of its velocity decreases because gravity is pulling the ball down. As the ball falls, the vertical component of its velocity increases because gravity is still pulling it down. 5. The vertical component of velocity for a projectile...
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...* 000000 Motion * Acceleration * Velocity Keywords * Motion * Acceleration * Velocity * Circular Motion * Vectors * Harmonic Motion * Kinematics * Rotational Motion * Linear Motion Sample Learning Goals * Is the velocity vector blue or green? How can you tell? * Is the acceleration vector blue or green? How can you tell? * Explain why the velocity and acceleration vectors behave as they do for the preset motions (linear acceleration I, II, circular motion, & harmonic motion). Tips for Teachers The teacher's guide (pdf) contains tips created by the PhET team. Teaching Ideas Title | Authors | Level | Type | Updated | 2D Motion | Patrick Foley | HS | Lab | 9/20/12 | Rotational Motion | Sarah Stanhope | HS | Lab | 1/27/11 | 1 Dimensional Motion - Kinematics and Graphing | Sarah Stanhope | HS | Lab | 1/27/11 | Introduction to rotational motion | Sarah Stanhope | HS UG-Intro | CQs | 2/24/10 | 2D Motion Activity | Drew Isola | HS | CQs | 1/11/09 | Vectors Phet Lab | Chris Bires | HS | Lab | 8/4/10 | Modeling a linear simple harmonic oscillator | Mark Kelly | UG-Intro | Lab | 4/7/08 | Motion in Two Dimensions | Gretchen Swanson | HS | Lab | 9/18/07 | You can submit your own ideas and activities. Translated Versions: Language | Language (Translated) | Simulation Title | | | Arabic | العربية | الحركة في بعدين | Run Now | Download | Arabic, Saudi Arabia | العربية (السعودية) | الحركة...
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...perfect speed and circle around a focal point. 4) Now move the ball at a slow constant speed across the screen. What do you notice now about the vectors? Explain why this happens. When I move them in the same direction they are even/on top of each other. This happens because the velocity or direction and speed are constant making the acceleration constant. 5) What happens to the vectors when you jerk the ball rapidly back and forth across the screen? Explain why this happens. The blue arrow goes with the green the shoots in the opposite direction shortly after. This happens because of the ball decelerating rapidly before traveling in the other direction and repeating the process 6) Now click on ‘Circular’ on the bottom. Describe the motion of the ball and the behavior of the two vectors. Is there a force on the ball? How can you tell? Be detailed in your explanations. Since the speed is now constant, the velocity...
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...FUNdaMENTALS of Design Alexander H. Slocum Pappalardo Professor of Mechanical Engineering Massachusetts Institute of Technology Cambridge, Massachusetts, USA slocum@mit.edu ™ FUNdaMENTALS of Design Pappalardo Series in Mechanical Engineering This book was made possible by a generous gift from Neil and Jane Pappalardo Support for this book was also provided by the Cambridge-MIT Institute, and iCampus the Microsoft-MIT Alliance ©2007 Alexander H. Slocum ABOUT This Book A college student challenged a senior citizen, saying it was impossible for their generation to understand his. "You grew up in a different world," the student said. "Today we have television, jet planes, space travel, nuclear energy, computers..." Taking advantage of a pause in the student's litany, the geezer said, "You're right. We didn't have those things when we were young; so we invented them! What are you doing for the next generation?"1 This book is about helping people to learn how to create their own future! It does this by taking advantage of the fact that the reader’s LEFT brain sees the LEFT side (FUN) of the book. The RIGHT brain sees the (MENTAL) side of the book. Its simply FUNdaMENTAL! This in itself is a key feature of this book: It seeks to train the brain to think by many a link. Creating things is NOT done by following a monotonous recipe... The ability to create can be learned by anyone who has a yearn to learn! But the eye must be quick to sort and pick! Embedded inside, many...
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...Lab # 111 “Projectile Motion” Objectives : The purpose of this lab is to understand projectile motion in two dimensions and apply linear motion equations to solve the problem. Also to predict where a given size bullet to be placed in horizontal direction to leaving table. In addition to that measure the range of projectile leaving table at an angle, and use the value to predict where the projectile bullet to strike at floor. Theory : To predict where bullet will land on the floor when lunched from the mini launcher from a table at an angle, but to do that first we need to determine the velocity of the bullet and to determine by launching the bullet horizontally from the table and measuring the vertical and horizontal distances through distance that the bullet travels. Then the initial velocity can be used to calculate where the bullet will land when the bullet lunched from the mini launcher at an angle. Horizontally lunched bullet at θ=0 off a table with an initial speed, vo, the horizontal distance travelled by the bullet and the vertical distance of the bullet drop in time t describe: x= v0t (1) y=v0yt+12gt2 (2) Now we can determine the initial velocity of the bullet by measuring x and y. where y = 0, therefore, the time of the bullet can be found by equation: t= 2yg, Where g = 9.8 (3) Now, to guess the range of the bullet, x, at and angle, θ, above horizontal, we guess the time of the bullet using vertical motion equation: 12gt2-(v0sinθ)t-H=0...
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...Section I: * Good reason: reasons that are psychologically compelling for a given audience that makes further inquiry both unnecessary and redundant. Therefore, justifying a decision to affirm or reject a proposition. (Page 2, 12th Edition) Example: * Ethos: means to convince by the character of the author and by the amount of respect and credibility the commands from the audience. Example: As a doctor, I am qualified to tell you that this course of treatment will likely generate the best results. * NDT*: National debate tournament. (Page 20, 12th Edition). * CEDA*: Cross Examination Debate Association. (Page 20, 12th Edition) * Sophists: A person who reasons with clever but fallacious arguments. Example: A person who uses graphs and scientific observation to convince someone that humans are not mammals. * Enthymeme: (1) A truncated syllogism, in which one of the premises or the conclusion is not stated. (Page 153, 12th Edition) Example: “You will come out victorious, just do your best." The missing premise is "All people who do their best are people who come out victorious." * Deduction: Argument that begins with a broad generalization and moves to a more specific application or conclusion. (Page 170, 12th Edition) Example: All living organisms eventually die. A flower is a living organism. Therefore, it will eventually die. * Induction: Argument that begins with a specific case and moves to a broader generalization...
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...Major Milestones of the Telecommunications Industry 1837 Samuel Morse invents the telegraph - The information age began with the telegraph, which was invented by Samuel F.B. Morse in 1837. This was the first instrument to transform information into electrical form and transmit it reliably over long distances. The earliest form of electrical communication, the original Morse telegraph of 1837 did not use a key and sounder. Instead it was a device designed to print patterns at a distance. 1858 Transoceanic telegraph cable is laid – The transoceanic telegraph cable is an undersea cable running under the Atlantic Ocean used for telegraph communications. The first communications occurred August 16, 1858, reducing the communication time between North America and Europe from ten days, the time it took to deliver a message by ship, to a matter of minutes. 1876 Alexander Graham Bell invents the telephone - The telegraph was followed by Alexander Graham Bell's invention of the telephone in 1876. The magneto-telephone was one of the first telephones on which both transmission and reception were done with the same instrument. 1885 - Incorporation of the American Telephone and Telegraph company (AT&T). After its incorporation in 1885, the American Telephone and Telegraph company dominated the telecommunications market. 1888 - Heinrich Hertz discovers the electromagnetic wave 1895 - Marconi begins experimenting with wireless telegraph 1901 Guglielmo Marconi invented the radio—the...
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...Unit 1 Research 1 PT1420 In the 1970s the programming language that was most popular was Pascal. Pascal was designed in 1968-69 but published in 1970. Niklaus Wirth created the Pascal language to “1) make available a language suitable for teaching programming as a systematic discipline based on fundamental concepts clearly by the language, and 2) to define a language whose implementations could be both reliable and efficient on then-available computers. In 1972 the C programming language was developed by Dennis Ritchie. C was created to work with the system Unix. “Unix gives C such advanced features as dynamic variables, multitasking, interrupt handling, forking, and strong, low-level, input-output. Because of this, C is very commonly used to program operating systems such as Unix, Windows, the MacOS, and Linux.” In the 1980s the popular programming language was C++. C++ was developed at Bell Laboratories. C++ is a general purpose multi-paradigm spanning compiled language that has both high-level and low-level languages’ features. It was started as an enhancement to the C programming language, Bjarne Stroustrup in 1979. In the 1990s Java was the popular programming language. It was created in 1991 developed by James Gosling at Sun Microsystems and release in 1995. In the 2000s Visual Basic (VB) was popular in the programming world. VB was developed from BASIC which was originally developed in 1964 by John Kemeny and Thomas Kurts. VB is a Microsoft programing language and software...
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...2/16/2014 Intellectual Property creation witnessing steady growth in India: Report - Economic Times You are here: Home > Collections > India RELATED ARTICLES Budget 2012: Relax corporate tax and surcharges to boost... March 5, 2012 Intellectual Property creation witnessing steady growth in India: Report PTI Jun 26, 2013, 06.43PM IST Bharti Airtel gives IP contract to Alcatel Lucent India June 1, 2012 Tags: Texas Instruments general motors | Mercedes-Benz | investments | intellectual property | Intel | Hewlett-Packard | | gdp | Alstom | Alcatel Lucent Alcatel-Lucent launches IP Transformation Center Septemb er 8, 2009 IN-DEPTH COVERAGE India Intellectual Property Alcatel-lucent Alstom NEW DELHI: The country's contribution to Intellectual Property (IP) creation is witnessing a steady growth, however, investments in R&D and patent activities in the country are still relatively slow when compared to developed nations, a report says. According to globalisation and market expansion advisory firm Zinnov's study 'Enhancing the IP Quotient in MNC R&D centres', IP creation is witnessing steady growth in MNC R&D centres, but investments in R&D and patent activities in India are still relatively slow. (A sector-wise analysis…) The study further said India spends just 1 per cent of its GDP on R&D, while countries like Israel spends 4.2 per cent, Japan 3.7 per cent, US 2.7 per cent and China 2.0 per cent...
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...Electronics rely heavily on electronic switching and amplification to generate and capture the various signals which allow them to operate. A controllable valve that allows a small signal to control a much larger signal does this, and could be related to a controllable valve used in the control of water flow. This was once done by a device known as vacuum tube but was later brought down to a much lower production scale for a variety of industrial, economical and business related reasons. Bell Laboratories, the research arm of telecommunications company American Telephone and Telegraph’s (AT&T) director Mervin Kelly put together the first team of researchers and scientists placed on the task of research and development of a solid state-semiconductor later called a transistor that would supersede vacuum tubes and provide numerous advantages. The success of this development would prove to change the computing, electronics and telecommunications systems altogether. Up until the invention of the transistor a vacuum tube was used in the control, amplification and generation of electrical signals. Vacuum tubes are tubes usually made from glass and designed in an airtight manner as to keep the flow of “cathode rays” from external disturbance as they pass from each terminal and laid the foundation for numerous technical innovations, such as the light bulb discovered by Thomas Edison (fig. 1). Joseph John Thomson further made a vacuum tube and placed a third terminal to attain a grasp...
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...Fall 2015 Analytical Chemistry I Quantitative Analysis Chem 341WI 4 Credit Hrs | Instruction Mode: L (lab) and P (class) Professor Andrew Holder holdera@umkc.edu • SCB 113 • 816-235-2293 • 913-543-3709 (fax) Office Hours: T/Th 1:00-4:00, 5:00 – 7:30 Lecture: T/Th 4PM | Labs: T/Th 1PM (AFT), 5PM (EVE) Credit: Lab + Lecture = 4 credits | Format: Lab + Lecture (P) Lecture / Class Policies and Procedures Correspondence with UMKC Student Learning Outcomes Scientific Reasoning & Quantitative Analysis * Apply principles/methods of sciencea, mathb, statisticsc and logicd to solve problems and draw logical inferences. * Chpt 3: Experimental Error (c) * Chpt 4: Statistics (c) * Chpt 6: Chemical Equilibrium (a, b, d, e, f) * Chpt 7: Activity & Systematic Trtmnt, (a, d, e, h) * Chpt 8: Monoprotic Acid-Base Equil., * Chpt 9: Polyprotic Acid-Base Equil. (a, d, e, g, h) * Develop quantitative literacy enabling comprehensione and evaluationf of info in broad contexts. * Chpt 3: Experimental Error, Chpt 4: Statistics (f) * Chpt 5: Quality Assurance and Calibration Methods (c) * Understand methodsg/principlesh of scientific discovery and their application * Sxn 0-2: The Analytical Chemist’s Job (g, h) * Sxn 0-3: General Stages in a Chemical Analysis (g, h) * Chpt 2: Tools of the Trade (g) * Carrying out laboratory analyses (g, h) ...
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...Blogging is popular among the people in today’s society, especially amongst teenagers. In fact, the number of blogs is exploding, with about 14 million existing blogs. On average, the number of blogs is doubling every five months. There are many advantages of blogging. Firstly, people can use as an online dairy, using it to share the day’s happening in her life with other visitors on the net. Furthermore, if the blogger (author of the blog) has met up with certain incidents in her life, he can share it on the blog and others can console or praise him, by giving comments or leaving a message in the blog’s tag board, depending on the incident. Blogging can also be a good way to relieve stress as some way wants to use their blog to vent out their frustration or pour out their woes when stress becomes too much for them. Some bloggers even use their blogs to flaunt their literati skills by posting poems about themselves or things around them. Secondly, bloggers can also use their blogs to inform others on a certain topic which happens to be his niche, thus allowing others who are interested in the topic to learn some tricks from the blog, they are also post questions to the blogger if they meet up with problems. Even Mr. Donald Trump is doing so, he launched the Trump Blog last month to share his insights into and answer questions about corporation ethics, personal success and business dilemmas. Other organizations are also using blogs to make announcements to...
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...fornia, start-up, Shockley Semiconduc tor Laboratory. Shockley had been part of the Bell Labs team that invented the transistor. He had quit his job and come west to start his own company, telling people his goal was to make a million dollars. Everyone thought he was crazy. Shockley knew he wasn't. Unlike a lot of the people at Bell Labs, he knew the transistor was going to be big. Shockley had an idea about how to make transistors c heaply. He wa s going to f abric a te them out of si li con. He had come to this valley, south of San Francisco, to start production. He felt like hewas on the cusp of history, in the right place at the right time. All that he needed was the right people. Shockleywas leaving nothingto c hance. Tod a y's in ter vi ew wa s J i m Gibb ons . Hewa s a young guy, earl y twenti es . He already had a Stanford Ph.D. He had s tudied a t Cambridgetoo - on a Fulbri ght sc holars hip he'dwon. Gibbons was si tting in front of hi m ri ght now, in Shockley's Quonset hut of fice. Shockley picked up his s topwa tch. In Augus t 1957 William Shockleywas recrui ting s taff for hisPalo Alto, Cali fornia, start-up, Shockley Semiconduc tor Laboratory. Shockley had been part of the Bell Labs team that invented the transistor. He had quit his job and come west to start his...
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...the company obtains a high performance network for a reasonable price. Project description MK Institute of Higher Learning is purposing a project with the description to network a classroom based floor. This floor will consist of three wings. Each wing accommodates one distribution closet, which must be interconnected to one another. Each wing also has eight classrooms and one computer lab. Classrooms will need 2 drops and the computer labs will need 44 drops, resulting in 60 drops in all per wing. The ISP connection will be entering from the north wing’s distribution room. The institute will also be requiring that a wireless access coverage to the central lobby area, allowing 100 users simultaneously, to be made possible. Also noting that the central lobby area consists of three solid supports, holding a 25’ ceiling. Major Deliverables * The networking of the MK Institute of Higher Learning. * Placing needed hardware. * Wiring the hardware and network. * Interconnecting distribution rooms. * 3 wings, each consisting of 8 classrooms = 16 drops, one computer lab = 44, and one distribution room. * Wireless central lobby allowing 100+ users simultaneously. * Fully functional Networking...
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