the spaces provided. At the end of the examination, indicate the letters of the Options answered in the candidate box on your cover sheet. 8810-6506 31 pages © International Baccalaureate Organization 2010 0131 – 2 – Option A — Sight and wave phenomena A1. This question is about the eye. (a) N10/4/PHYSI/SP3/ENG/TZ0/XX State, with reference to the definitions of near point and far point, what is meant by accommodation. [3] .................
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Chapter outline: * Sending bits with electricity and copper wires * (AC) (AC) Sending bits with light and fiber-optic cables * Frequency Amplitude Phase Frequency Amplitude Phase Sending bits with radio waves and no cable Electrical Current – the amount of electricity that flows past a single point Electrical Current – the amount of electricity that flows past a single point Sending voiceand data from mobile phones through wireless wan Data: amplitude and phase shift
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Although many argue that the answer to the question “how could the world be a better place?” should be left to intellectuals, politicians or scholars, I believe that the best answer to this questions is demonstrated by 60,000 baseball fans. Fans at a baseball game do not merely provide support for the home team, but also a metaphor for life. Specifically, the actions of the spectators at a game illustrate the selfish desires of human nature as well as a possible answer to improve life for all.
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car would still be the moving observer. 4. As a truck traveling at 96 km/hr approaches and passes a person standing along the highway, the driver sounds the horn. If the horn has a frequency of 400 Hz, what are he frequencies of the sound waves heard by the person a. As the truck approaches? (434 Hz) [pic] [pic] b. After it has passes? (371 Hz) [pic]
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Leon Theremin invented an espionage or spying tool for the Soviet Union which retransmitted incident radio waves with audio information. Sound waves vibrated a diaphragm, which slightly altered the shape of the resonator that modulated the reflection radio frequency. So basically Leon Theremin created the processor for the RFID technology because it is being energized and activated by waves from an outside source. RFID uses signaling between the reader and tag is done in several different incompatible
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ask myself, “What would be my ideal summer vacation looks like?” To start my visualization, I would like to spend it in a place afar from the noisy streets of the city. A place where the only sounds I can hear are the chirping of the birds, the waves crashing on the shore and the laughter of my family. In that place, the trees are dancing gracefully and flowers are waving gently with the wind. In the distance, the shore is filled with sand so white, crystal clear water and with porpoises on the
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Radio Waves & Electromagnetic Fields SIM Homework 1) For this question, use the Radio Waves & Electromagnetic Fields simulation to guide your understanding of how Radio broadcasting and Radio receivers work. a) How is the radiating electric field (or electromagnetic signal) produced when radio stations broadcast? Include a description of what is producing the signal as well as the reasoning behind how this could produce a signal. b) How does your antenna work to detect this electromagnetic
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compression and rarefaction. Shown to the left is a diagram of a sound wave; the high concentrated areas of particles are the compression regions which also are the areas of high air pressure. In contrast to this, the low concentrated areas of particles are known as rarefaction and here is where the lowest air pressure occurs and the wave is at its lowest point. The wavelength (also known as the period of a graph) of a sound wave is the relationship between the initial frequency and the speed of sound
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Example 1: An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves that reflect off distant objects and return to the camera. A sensor detects the time it takes for the waves to return and then determines the distance an object is from the camera. The camera lens then focuses at that distance. If a sound wave (speed = 340 m/s) returns to the camera 0.150 seconds after leaving the camera, then how far away is the object? Solution:
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this much… and what was that shouting in my ear? An alternate wave of red pushed me downwards, and after that I was suffocating in it; it was all over the place. I felt myself being lifted upwards, and in my fringe vision I saw a face rise up out of the ocean of red. I felt praises, and some more red encompassed me in a goliath giant squeeze. Just when a whistle blew twice out yonder did I understand that we won… we won! I rode the wave of red to my red mentor, and my colleagues set me down and I
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