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IUB PHYS-P 105 - Final Exam Study Guide

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PHYS 105 1nd EditionFinal Exam Study GuideIn physics, there are many different scenarios to find the value of a Power from a source. What are the different equations that we have used in class?- P = IV- P = I2R- P = V2/ R- This means Energy = Power x TimeDefine Coulomb’s Law.- It is a law of physics describing the electrostatic interaction between electrically charged particles. The law was first published in 1785 by French physicist Charles Augustine de Coulomb.Define Ohm’s Law, and give the equation that represents it.- V = IR- Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points.What is a capacitor?- It is used to store energy in an electric field- Widely used in common electrical devices- SI unit of capacitance is Farad- Stores energy in the form of an electroacoustic field between its platesWhat does a RLC circuit include?- It is an electrical circuit that includes a resistor, inductor and capacitor. - These are connected in series or in parallel- These are used in many different types of oscillator circuits What is the purpose of an amplifier?- It is used to increase the output of a source, and making it ‘louder’ Are AM tuners susceptible to noise and if so, why?- Yes, because the AM wave and bandwidth may become smallWhy are FM tuners less susceptible to noise?- Because the amplitude/bandwidth is usually constantWhy do analog signals have a small dynamic range?- Because the analog signal is susceptible to noiseWhat are the three main number systems we had talked about in class?- Decimal system, Base-8 number system and Binary systemWhat is the unit of 1 or 0 called in terms of digitization?- 1 bitWhat is signal digitization?- It is the representation of an object, image or a signal by a discrete set of points. The result of this would be a digital image. What is aliasing?- The misidentification of a signal frequency above half the sampling


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