sound waves Sound is a series of compression waves that moves through air or other materials. These sound waves are created by the vibration of an object‚ like a radio loudspeaker. The waves are detected when they cause a detector to vibrate. Your eardrum vibrates from sound waves to allow you to sense them. Sound has the standard characteristics of any waveform. Sound is a waveform that travels through matter. Although it is commonly in air‚ sound will rapidly travel
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WAVE ENERGY Chapter 2: Energy Technology 2.1 Source of Wave Energy Ocean waves are caused by the wind as it blows across the open expanse of water‚ the gravitational pull from the sun and moon‚ and changes in atmospheric pressure‚ earthquakes etc. Waves created by the wind are the most common waves and the waves relevant for most wave energy technology. Wave energy conversion takes advantage of the ocean waves caused primarily by the interaction of winds with the ocean surface. Wave energy is
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Democracy: The Best of the Worst Democracy is without a doubt a fairly successful system of governance. Although dozens of systems have been tried over the ages‚ the world has been continuously edging towards increasingly democratic models‚ at least in baby steps when not in great leaps and bounds. And yet Winston Churchill - both the product and professional beneficiary of a modestly democratic system - suggested that he considered it to be paradoxically "the worst form of government except all
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POLITICAL SCIENCE-POL101 QUESTION 1: WHAT IS THE ROLE OF POLITICAL PARTIES IN DEMOCRACY? DISCUSS WITH THE AID OF EXAMPLES. 04/10/2013 INTRODUCTION The purpose of this essay is to discuss the roles of political parties in a democracy. Before going any further‚ the discussion will start with an introduction where key terminologies making the question will be defined‚ secondly a discussion on roles played by political parties in a democracy with the aid of examples and lastly a
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Electromagnetic waves are radiated energy of all different strengths. They’re different from sound waves and water waves because they have the ability to travel through empty space. A vacuum. These are the only types of waves that do not need any type of medium because of photons. Photons are tiny particles that don’t get traveled through‚ but make up electromagnetic waves. Photons travel with the wave at about 300‚000 k/s. also known as the speed of light. The more energy the photons have‚ the brighter
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Democracy In Athens The city state of Athens was thought to be one of the first democracies ever. Cleisthenes made final reforms to the Athenian constitution and united four separate tribes in 507 B.C.E.. This became the seed of Athenian democracy. To this day‚ about 60% of all governments are democracies‚ which makes Athens the father of modern governing. However‚ by today’s standards‚ Athens was far from what one would call “democratic”. Athens had several democratic aspects to its society‚ but
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Vibrations and Waves 1) A wiggle in time is a A) vibration. B) wave. C) both D) neither Answer: A Diff: 1 Topic: Vibrations and Waves 2) A common source of wave motion is a A) wave pattern. B) harmonic object. C) vibrating object. D) region of variable high and low pressure. E) none of these Answer: C Diff: 1 Topic: Vibrations and Waves 3) Like
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SINE WAVE Sine wave: Sine wave is the most fundamental form in analog signal. When any communication process will be analog process then the data must be converting into analog signal & a sine wave is the common form of analog signal. A sine wave changes over a course of cycle which is constant and continuous. A sine wave represent in graphically where time in X axis & value in Y axis. [pic] Parameters; A sign wave have three parameter
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object that is struck with a sound wave of equal sound wave vibrations will amplitude the given tone. This would explain the reason why some singers are able to break wine glasses with their voice. The vibrations build up enough to shatter the glass. This is called RESONANCE. Resonance can be observed on a tube with one end open. Musical tones can be produces by vibrating columns of air. When air is blown across the top of the open end of a tube‚ a wave compression passes along the tube
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Democracy is said to be one of the best forms of government. People choose democracy mainly to remove corruption‚ hunger and poverty. Poverty is regarded as one of the worst affecting social evils. Population‚ Corruption‚ Economy and Illiteracy are the main factors which directly or indirectly lead to poverty. Population is one of the major factors which lead to poverty. The excessive population increases poverty. The increasing population decreases the per-capita income of families. For example
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