Mass
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As a result of World War I, Europe had a different understanding of war in the twentieth century than the United States. One of the most important ways in which the First World War was experienced on the continent and in Britain was through commemoration. By means of both mass-media technologies and older memorial forms, sites of memory offered opportunities for personal as well as political reconciliation with the unprecedented...more
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Frank Levinson's Top 10 Things You Must Have to Start a Business. These include: 1) Spending everything on a good team and equipment 2) Letting people know the company is in business 3) Raising limited capital 4) Taking stock of a company and determining its needs 5) Being open to opportunities 6) Having a supportive family 7) Targeting mass markets, not just niche markets 8) Having confidence in new ideas 9) Acquiring...more
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The dynamics of a many-body system is examined. Through a variety of examples, the professor demonstrates how to locate the center of mass and how to evaluate it for a number of objects. Finally, the Law of Conservation of Momentum is introduced and discussed. The lecture ends with problems of collision in one dimension focusing on the totally elastic and totally inelastic cases.
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The focus of the lecture is simple harmonic motion. Professor Shankar gives several examples of physical systems, such as a mass M attached to a spring, and explains what happens when such systems are disturbed. Amplitude, frequency and period of simple harmonic motion are also defined in the course of the lecture. Several problems are solved in order to demonstrate various cases of oscillation.
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Concepts covered in this lecture begin with the restoring force of a spring (Hooke's Law) which leads to an equation of motion that is characteristic of a simple harmonic oscillator (SHO). Using the small angle approximation, a similar expression is reached for a pendulum. To demonstrate that the period is independent of the mass of the bob, Professor Lewin places himself at the end of the 5 meter long cable and measures the period.
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Google has proven that if you build it, they will come, and their mass of tools to keep users logged in has been the crux of their success. Vice President of Search Products & User Experience Marissa Mayer elaborates on this strategy, pointing out that money - and advertisers - will always follow consumers. Focus on building sticky media that draws in a wide audience, and the method to its monetization will follow.
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At the beginning, the product was an 'internet sponge' that could absorb information from a computer and be carried around on a keychain. As time went on, the idea went through lots of changes to become what the Hiptop is today. Hershenson describes the formation of the product as a critical mass process: enough stuff (people, money, time) gets scrunched together until the product comes out like a giant release of energy.
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The discussion of four-vector in relativity continues but this time the focus is on the energy-momentum of a particle. The invariance of the energy-momentum four-vector is due to the fact that rest mass of a particle is invariant under coordinate transformations.
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Lagrange Equations, Equations of Motion, Kinetic Energy, Equations of Motion - Explicit Form, Centrifugal and Coriolis Forces, Christoffel Symbols, Mass Matrix, V Matrix, Final Equation of Motion
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Least-Norm Solution, Least-Norm Solution Via QR Factorization, Derivation Via Langrange Multipliers, Example: Transferring Mass Unit Distance, Relation To Regularized Least-Squares, General Norm Minimization With Equality Constraints, Autonomous Linear Dynamical Systems, Block Diagram
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In this lecture Professor Lewin covers elastic and inelastic collisions, including a discussion on center of mass and internal inergy. He concludes with a Newton's Cradle demonstration, soliciting an analytical proof of his demo showing a lineup of colliding balls.
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Estrin talks about the key things that entrepreneurs can do to adapt to the climate today: 1) Adjust business model and expenses 2) Ask yourself, can I afford to run this business at critical mass? 3) Look for areas of incremental growth 4) Lead with tight execution skills and flexibility
