Catie Bates 10/22/2014 Physical Science Physical Changes I like physical changes more than chemical changes. Some reasons are‚ physical change is "easily" reversible‚ how liquids can become solid and vice versa‚ the solid disappears but just the application of heat can boil the water off and get the salt back in the same form. Therefore‚ I like physical changes more than chemical changes. I like physical changes more than chemical changes because physical change is "easily" reversible because
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Waves Introduction For this experiment‚ the use of equipment such as oscillators and function generators were used in order to calculate forms of AC waves. Waves are visual representations of the variation of a voltage or current over time and are used in many applications throughout technology. Aim The aim of this laboratory was to be able to measure the voltage in a circuit over a specific time using equipment such as an oscilloscope‚ and using it to look at the SINE wave that is
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QUIZ # 2 ECP433L1 Direction: Rewrite the following questions in Engineering Lettering before answering. This will be send by 10:30 am.. Therefore call time for papers is 4.30 in the afternoon. Scan or photos of the papers will be send in my email. Thanks PS.. 1. Determine the percent modulation of an AM for the following conditions if the unmodulated carrier is 80 V peak to peak. | Maximum P-P carrier | Minumum P-P carrier | (a) | 100 | 60 | (b) | 125 | 35 | (c) | 160 | 0
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COMP3054 LAB 6 Name: ID# Section: LAB 6: Frequency Domain Measurements Using the Vector Signal Analyzer Objective: Measure: frequency and amplitude‚ channel power/ band power‚ relative frequency and amplitude‚ improving resolution‚ and spectrogram displays using the VSA Section A: Measuring Frequency and Amplitude
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Chemical Periodicity Engr. Imelda Galera De La Salle University-Dasmariñas Dasmariñas‚ Cavite Philippines ABSTRACT Chemical periodicity was demonstrated using different samples of elements from Group IA‚ IIA and IVA. These samples are: Li2CO3‚ Na2CO3‚ K2CO3‚ MgCO3‚ CaCO3‚ BaCO3‚ Carbon‚ Tin‚ Silicon and Lead. Each sample was placed in a test tube‚ (one sample and one test tube) and the physical color‚ appearance and state was defined. Water was used to test the solubility of the element
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ECE 4784/6784‚ Wireless Communications‚ Assignment 1 1. (15) A half-wave dipole is situated at the top of a cellular tower‚ oriented vertically on the tower. The current into the dipole is a sinusoidal current at frequency 870 MHz‚ with peak value I = 0.1 ampere. Consider a mobile receiver at a distance of d kilometers along the horizon. Remember the dipole pattern gives field strength E(d‚ θ‚ φ) = 60I cos( π cos(θ)) 2 aθ v/m d sin(θ) (1) a. Assume free-space propagation laws.
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INTEFERENCE -is the phenomenon that occurs when two waves meet while traveling along the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium. To begin our exploration of wave interference‚ consider two pulses of the same amplitude traveling in different directions along the same medium. Let’s suppose that each displaced upward 1 unit at its crest and has the shape
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CHAPTER-15 Question 15.1: * Answer (b) Answer: 10 MHz For beyond-the-horizon communication‚ it is necessary for the signal waves to travel a large distance. 10 KHz signals cannot be radiated efficiently because of the antenna size. The high energy signal waves (1GHz − 1000 GHz) penetrate the ionosphere. 10 MHz frequencies get reflected easily from the ionosphere. Hence‚ signal waves of such frequencies are suitable for beyond-the-horizon communication. Question 15.2: * Answer
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Logan’s Logo So Logan has devised a logo for her company which is a square divided into 3 sections with 2 functions. Our objective is to find what functions fit the two curves on her logo and also make it fit on two other sizes of her logo. Just looking at the shape of the lines 2 types of functions immediately jump into my head‚ sinusoidal and cubic. I first traced a grid onto the original copy of the logo I was given in order to get points to start trying to form a function to match the design
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Samples | Physical State | Color | Appearance | Solubility in Water | | | | | | Group IA and Group IIA Elements | | | | Li2CO3 | Solid | White | Shiny Powder | Soluble | Na2CO3 | Solid | White | Refined Powder | Soluble | K2Co3 | Solid | White | Powder | Soluble | MgCO3 | Solid | White | Unrefined Powder | Insoluble | CaCO3 | Solid | White | Powder | Insoluble | BaCO3 | Solid | White | Crystalized Powder | Insoluble | | | | | | Some Group IVA Elements | | |
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