chapter 1 : Waves GCKL 2011 1.1 U N D E R S T A N D I N G W A V E S What is meant by a wavefront State the direction of propagation of waves in relation to wavefronts What is transverse wave? An imaginary line that joins all the points on the crest of a wave. The direction of propagation of a wave is perpendicular to its wavefront. A transverse wave is a wave in which particles of the medium oscillate in the direction of the propagation of the waves. Water waves and electromagnetic
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SCHOOL OF PHYSICS Physics 1001: Laboratory 3. Standing Waves. Your name/student number:_________________________________ Date:_________ Marker’s signature:______________ Mark:______ Pre-lab Question 1: What is the wavelength of a sound wave of frequency 500 Hz in air (you will need to look up the speed of sound in air)? ________ m. Pre-lab Question 2: If a person inhales helium gas the sound of their voice changes quite dramatically. Why? Pre-lab Question 3: A shower cubicle
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Active Water-Wave Absorber Matthew Carney ME236: Control & Optimization of Distributed Parameters Professor Alex Bayen University of California‚ Berkeley 04.30.2007 UC Berkeley‚ Spring 2007 1 Contents • • • • • • Motivation Initial Idea Literature Search Focus Current Work Future Work www.emec.org.uk UC Berkeley‚ Spring 2007 2 Motivation • Significant amounts of energy is stored in the ocean • Large potential for extracting energy from waves • Control is the key to optimizing
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The 5th Wave by Rick Yancey contains a multitude of conflicts. Some of those are minor conflicts and some are major. One major conflict is the obvious humans versus aliens hostility that drives Cassie forward and reminds her of why survival is important; a minor conflict would be Cassie coping with the reality that she murdered somebody for no reason other than her paranoia‚ and a final minor conflict would be the antagonism between Ben and Reznik. Firstly‚ the most conspicuous conflict throughout
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its booming and trendsetting entertainment industry. The new image gained from the Hallyu Wave has also paved the way for smoother global transaction and relation. (Lee‚ Sue Jin 2-3) This new image embodies the more positive yet intrinsic qualities of the Korean spirit: A spirit of industrialism‚ passion and innovation for their work. The Korean government has also recognized the potential of the Hallyu Wave as the nation’s prime export. Hallyu has been deemed as the nation’s ‘soft power’ due to its
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Sound of Waves Commentary In this passage‚ found on pages 135 and 136 of The Sound of Waves‚ author Yukio Mishima utilizes brutal imagery through descriptive diction to expose the subtle sexism apparent on this island. Furthermore‚ he provides commentary on gender roles and stereotypes‚ which are apparent not only in his own life‚ but on the island of Uta-jima as well. Gender roles become apparent as the novel progresses because Shinji is looking for a woman of beauty rather than of intellect
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Mechanical Waves Background Mechanical waves are waves which require a medium for propagation since energy is transferred via the motion of the medium. An example of a mechanical wave is sound. Transverse waves are waves which vibrate perpendicular to their direction of propagation. Surface water waves can be classified as a transverse wave. All electromagnetic waves are also examples of transverse waves. A longitudinal wave is a wave in which its particles vibrate parallel to their direction of
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EC2353-ANTENNAS AND WAVE PROPAGATION QUESTION BANK UNIT – I PART – A 1. What is retarded current? 2. Define hertzian dipole. 3. Define antenna gain. 4. What are the two types of radiation pattern? 5. State reciprocity principle. 6. Define antenna temperature. PART – B 1. Derive the expression for calculation of electromagnetic field due to an alternating current element. 2. Explain how the solutions to wave equations are arrived
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Select the five facts about tsunamis that were the most interesting or surprising to you. Make a list of your facts. 1. A tsunami is made up of a series of traveling ocean waves of extremely long wavelength. 2. They are triggered by earthquakes and undersea volcanic eruptions and deep sea landslides. 3. The wave shape changes and the height increases as it approaches the coastline. 4. Far field tsunamis have a long travel time so it is easier to predict their effects. 5. Near field
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the friction of the jagged edges of the fault and it unsticks‚ all that stored up energy is released. The energy radiates outward from the fault in all directions in the form of seismic waves like ripples on a pond but much more violent. The seismic waves shake the earth as they move through it‚ and when the waves reach the earth’s surface‚ they shake the ground and anything on it‚ like our houses and workplaces. The tool that scientists use to record and measure earthquakes is called
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