M12/4/PHYSI/HP3/ENG/TZ2/XX 22126515 Physics Higher level Paper 3 Candidate session number 0 0 Examination code Friday 11 May 2012 (morning) 2 1 hour 15 minutes 2 1 2 – 6 5 1 5 INSTRUCTIONS TO CANDIDATES • • • • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Answer all of the questions from two of the Options. Write your answers in the boxes provided. A calculator is required for this paper. A clean copy of the
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emissions are electromagnetic radiations which occur due to the spontaneous disintegration of unstable nuclei. Natural elements with atomic number greater than 83 and isotopes of some lighter elements are found to be radioactive. They are categorized as alpha‚ beta and gamma radiations. Alpha particles are positively charged helium-4 nuclei ‚ beta particles are high energy-high speed electrons while gamma rays unlike alpha and beta radiation have no mass and charge and are short electromagnetic waves consisting
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Huygens ( Holland) - Wave theory of light 4. Issac Newton (UK) - Universal law of gravitation; law of motion; Reflecting telescope 5. Michael Faraday (UK) - Law of electromagnetic induction 6. James Clerk Maxwell (UK) - Electro magnetic theory;Light-an electromagnetic wave 7. Heinrich Rudolf Hertz (Germany) - Generation of electromagnetic waves 8. J.C.Bose (India) - Ultra short radio waves 9. W.K.Roentgen (Germany) - X-rays 10. J.J.Thomson (U.K) - Electron 11. Marie Sklodowska Curie (Poland) -
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1988 found a high school journalism class challenging whether or not they had their First Amendment violated when their freedom of speech was challenged. The Hazelwood Spectrum was a newspaper done by East Hazelwood High School in the Hazelwood School District and students whom completed the class Journalism I were able to work for the schcaool newspaper as a Journalism II student. Kathy Kuhimeier and two other journalism students wrote articles on pregnancy and divorce‚ which were declined by
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Lesson 1 Key Question Answers 1. What does Hubble’s law predict about the speed of a galaxy far away from the Milky Way compared to one that is closer? Hubble’s law predicted that galaxies were moving away from earth at a rate proportional to their distance from us. The farther away from the Milky Way a galaxy is‚ the larger the redshift is. The farther away a galaxy is‚ the faster it is moving away. Conversely‚ blueshifted galaxies‚ such as Andromeda‚ are moving closer to the Milky Way.
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important wave phenomenon‚ the surface wave. It occurs in many physical systems both mechanical and electromagnetic. Mechanical surface waves can exist at the interface between two media with different densities such as the oceans and air. Ordinary sea waves and tsunamis are surface waves. Seismic events can produce both longitudinal and shear waves at the earth’s surface‚ resulting in earthquakes. Electromagnetic surface waves can occur at the interface between dielectric and con-ductive media or between
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Tyndall effect‚ the longer-wavelength light is more transmitted while the shorter-wavelength light is more reflected via scattering. An analogy to this wavelength dependency is that longwave electromagnetic waves such as radio waves are able to pass through the walls of buildings‚ while shortwave electromagnetic waves such as light waves are stopped and reflected by the walls. The Tyndall effect is seen when light-scattering particulate-matter is dispersed in an otherwise-light-transmitting medium
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How a Microwave Works By Zach Betten [pic] What is a Microwave? A microwave oven or microwave is a kitchen appliance that cooks or heats food by using electromagnetic waves. This happens by using microwave radiation to heat materials such as water and other things within the food. This leads to food being more evenly heated throughout. Basic microwave ovens heat food quickly and efficiently. One setback is that they do not brown or bake food in
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Microwave oven (with no rotating dishes) Background Trying to measure the speed of light using a microwave with different types of food. This experiment is related to physics. Things such as televisions‚ radios and microwaves oven use electromagnetic waves. With the hotspots we can measure the distance between them and then we will have to apply the equation C=FI and then multiply the frequency of the microwave. Then I will compare my results to the one published which is 299‚792‚458 m/s.
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NT1310 Physical Networking Unit 4 Exercise 1: Cabling – Definitions Horizontal Cable- The cabling between and including the telecommunications outlet and the horizontal cross-connect. Backbone Cable- A cable connection between telecommunications or wiring closets‚ floor distribution terminals‚ entrance facilities‚ and equipment rooms either within or between buildings. Patch Cords- Any flexible piece of cable that connects one network device to the main cable run or to a patch panel that in turn
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