Circular Motion and Gravitation Circular motion is everywhere‚ from atoms to galaxies‚ from flagella to Ferris wheels. Two terms are frequently used to describe such motion. In general‚ we say that an object rotates when the axis of rotation lies within the body‚ and that it revolves when the axis is outside it. Thus‚ the Earth rotates on its axis and revolves about the Sun. When a body rotates on its axis‚ all the particles of the body revolve – that is‚ they move in circular paths about
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MKT 600-011 [Weekly Critique Notes] 1. What is the central issue in this case? Research in Motion Ltd. [who] is considering quickly penetrating a contrastive‚ yet competitive market with new technologies and a unique value proposition without the marketing expertise and additional capabilities like order fulfillment‚ technical support‚ webpage design and customer billing [what] in the dawn of mobility - 1997 [when] because of [why] * Changing market-place with a suboptimal equilibrium
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The Introduction Abstract Through examining the simple harmonic motion of a mass hanging on a spring‚ three investigations were conducted in the experiment. The experiments include the relation between the period in oscillations and mass‚ and figuring out if the period vs. mass graph should go through the origin and lastly‚ finding the mass needed to create a one second timer. It was investigated by placing a motion detector under a spring that was attached to a clamp which was attached to a retort
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One of the most compelling arguments made against the use of computers by children is the risk of repetitive motion injury such as carpal tunnel syndrome. This problem may be greater for children than for adults because their musculature and skeletal systems are not fully formed and may be at greater risk for injury. Children’s risk of suffering repetitive motion injuries may be further increased because they tend to use computers that are sized for adults‚ placed on adult-sized furniture‚ and positioned
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1 Physics and Measurement CHAPTER OUTLINE 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Standards of Length‚ Mass‚ and Time Matter and Model-Building Density and Atomic Mass Dimensional Analysis Conversion of Units Estimates and Order-ofMagnitude Calculations Significant Figures ANSWERS TO QUESTIONS Q1.1 Q1.2 Atomic clocks are based on electromagnetic waves which atoms emit. Also‚ pulsars are highly regular astronomical clocks. Density varies with temperature and pressure. It would be necessary to measure both
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Kinematics of linear motion (5 hours) 1 2.0 Kinematics of Linear motion is defined as the studies of motion of an objects without considering the effects that produce the motion. There are two types of motion: Linear or straight line motion (1-D) with constant (uniform) velocity with constant (uniform) acceleration‚ e.g. free fall motion Projectile motion (2-D) x-component (horizontal) y-component (vertical) 2 Learning Outcome: 2.1 Linear Motion (2 hour) www.kmph
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Term 3 Uniform Circular Motion When a body moves in a circular path with a constant speed‚ it is said to undergo uniform circular motion. Although the speed is constant‚ velocity is continually changing‚ since it is constantly changing its direction of motion. Centripetal V V ac ac Acceleration is directed towards the centre of the circle and is therefore called “centripetal acceleration.” ac =v^2r ac =v^2r If T is the time taken for one revolution then: V = 2πrT ac =v^2r
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** Atom and Introduction to Nuclear physics ** Introduction Alpha-particle scattering 2.1 Experimental set-up ➢ Alpha particle o is a high-energy helium nucleus with 2 protons and 2 neutrons. o has 2 positive charges. ➢ Gold foil was chosen since it has a high atomic mass. Thin gold foil‚ ~10-6m was bombarded by high-energy alpha particles. ➢ Angular deflections/ scattering of alpha particles were measured by observing
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Perpetual Motion (of machines) is defined as “The motion of a machine that‚ once activated‚ would run forever unless subject to an external force”; is it possible? Let’s start off where it all began. Ever since the 8th century man has been attempting to build Perpetual Motion Machines‚ many were designs of a system of weights on a wooden wheel.[1] These work in a simple cycle starting with the weights on the left side‚ these weights hang close to the wheel resulting in a lower torque; but when the
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PHYSICS PROJECT TO STUDY THE OPTICAL LENS OF A HUMAN EYE Eyes are organs that detect light‚ and convert it to electro-chemical impulses in neurons. The simplest photoreceptors in conscious vision connect light to movement. In higher organisms the eye is a complex optical system which collects light from the surrounding environment; regulates its intensity through a diaphragm; focuses it through an adjustable assembly of lenses to form an image; converts this image into a set of electrical signals;
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