3. Recent technological developments have allowed greater use of the electromagnetic spectrum 1. describe electromagnetic waves in terms of their speed in space and their lack of requirement of a medium for propagation In space (a vacuum) electromagnetic waves travel at the speed of light‚ a constant equal to 3.00108ms1. Unlike sound waves‚ electromagnetic waves do not vibrate particles‚ therefore they do not need a medium (substance) to propagate (move). 2. identify the electromagnetic wavebands
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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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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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undergo a vertical motion‚ but also undergo a horizontal motion. That is‚ as they move upward or downward they are also moving horizontally. There are the two components of the projectile’s motion - horizontal and vertical motion. And since perpendicular components of motion are independent of each other‚ these two components of motion can be discussed separately. The goal of this part of the lesson is to discuss the horizontal and vertical components of a projectile’s motion; specific attention
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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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Approximation of Planck’s constant and work function using Photoelectric effect on the particle nature of light Abstract This experiment aims to demonstrate the particle nature of light by photoelectric effect. Stopping potential was measured against different intensities of yellow (λ = 578 nm) and green (λ = 546 nm) light from first order spectral lines of mercury. No significant relationship was observed for stopping potential and percent transmission. However‚ charging
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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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ARCELIA ARRATIA MEASUREMENT OF LENGTH‚ MASS‚ VOLUME‚ AND DENSITY PHYSICS LAB REPORT Physics is the scientific study of matter and energy and how they interact with each other. Physics utilizes the scientific formula to test hypothesis and calculate matter such as density. Tools were created to measure material in a laboratory and have been perfected to reduce error. In this experiment measurement of length‚ mass‚ volume and density will be obtained through instruments of measuring
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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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Motion sickness Overview: The motion sickness is a deeper malaise - whose symptoms are nausea‚ vomiting‚ fatigue - due to non-uniform motion caused from traveling in a car‚ a ship‚ a train or a plane. Causes: You get motion sickness when one piece of your offset detecting framework (your internal ear camera.gif‚ eyes‚ and tactile nerves) detects that your body is moving‚ yet alternate parts don’t. Case in point‚ in the event that you are in the lodge of a moving ship‚ your internal ear may sense
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