DESCRIPTION AND WORKING: Conventionally‚ wireless-controlled robot arms use RF circuits‚ which have the drawbacks of limited working range‚ limited frequency range and limited control. Use of a mobile phone for robotic arm control can overcome these limitations. It provides the advantages of robust control‚ working range as large as the coverage area of the service provider‚ no interference with other
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so if the period is the same then so is the amplitude. Simply the seconds from which we start measuring would be one notch behind‚ so the arch of each wave would be 5 seconds earlier. 6) Using the period from question 1‚ find the frequency of the wave. That frequency is of course way too low for us to hear. Please round you answer to three digits‚ not counting the starting zero; that is‚ round it to four decimal
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hw07-Waves and vibrations – dickerson – (28763) This print-out should have 47 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 1 004 (part 4 of 6) 10.0 points What is its frequency? Correct answer: 6.1216 Hz. 001 (part 1 of 6) 10.0 points A spring with a spring constant of 50.3 N/m is attached to different masses‚ and the system is set in motion. What is its period for a mass of 2.8 kg? 1 = 6.1216 Hz . 0.163356
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to the phase shifter whose output is y(t). The phase shifter only has an effect on the phase‚ while the magnitude is not changed. We know that if we give all the positive frequencies a phase shift of −π /2‚ for a realisable filter‚ the negative frequencies will suffer a phase shift of +π /2. Based on these ideas‚ the frequency response of the phase shifter is shown in the (b) part of the figure. If we examine the filter in more detail‚ the filter response shows that this is the same as the operation
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Problem P2.1 (a) The complex permittivity for bottom round steak is about = 40(1 + i0.3) o at the operating frequency (2.5 GHz) of a microwave oven. What is the penetration depth? (b) Calculate loss tangents and skin depths for sea water at frequencies 60 Hz and 10 MHz. Sea water can be characterized by conductivity σ = 4 mho/m ‚ permittivity = 80 0 ‚ and permeability µ = µo at those frequencies. (c) A 100-Hz electromagnetic wave is propagating down into the sea water with an electric field intensity
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represented by the formula v= ƒλ ‚ 1) Raw data presented Table 1 Table 1 shows the frequency of the different tuning forks and the length of air needed for maximum resonance. The error on the length was estimated to 0.1 cm as we repeated eachexperiment several times. Note the error on the forks’ frequencies is a mere estimation as theyare accurately calibrated during manufacture. Frequency /HzLength /m 512.00.157480.00.169456.10.178426.60.192406.40.202384.00.215362.00.226341.30.243320
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BC107 BC108 LOW NOISE GENERAL PURPOSE AUDIO AMPLIFIERS DESCRIPTION The BC107 and BC108 are silicon planar epitaxial NPN transistors in TO-18 metal case. They are suitable for use in driver stages‚ low noise input stages and signal processing circuits of television reveivers. The PNP complemet for BC107 is BC177. TO-18 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit BC107 BC108 V CBO Collector-Base Voltage (IE = 0) 50 30
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moved. They were told to describe what happened‚ and what caused them to move. The students came to the conclusion that the sound caused the solid to bounce and vibrate. They then used an app called twisted wave recorder to show the amplitude and frequency of sound waves‚ they noted though it only shows the waves in 2-D rather than 3-D. the students were then asked to record their voice loudly and softly and determine the differences the pitch made to the wave. The class notice high sound waves are
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Tom Milligan Miligan & Associates 8204 West Polk Place Uttleton‚ CO 80123 ~303) w7-726a (303)977-8853(Fax) TMilligan@ieee.org (e-mall) Design of Corrugated Horns: A Primer Christophe Granet and Graeme L. James CSIRO ICT Centre‚ Electromagnetics & Antennas PO Box 76‚ Epping 1710‚ NSW‚ Australia E-mail: Christophe.Granet@csiro.au Keywords: Corrugated horn antennas; antenna feeds; reflector antenna feeds Slots 1. Introduction 0 ver the past 40 years‚ corrugated horns supporting
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(C) π 20 (D) 100 10. In a travelling electromagnetic wave‚ E and H vector fields are (A) (B) (C) (D) perpendicular in space . parallel in space. E is in the direction of wave travel. H is in the direction of wave travel. 11. The lower cut-off frequency of a rectangular waveguide with inside
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