the standing wave frequencies of changing the length (L)‚ tension (T)‚ and linear density (p) of the strings. Standing wave patterns in strings are observed at certain excitation frequencies for special values of L‚ T‚ and p. A standing wave can be defined as a vibration of a system in which some particular points remain fixed while others between them vibrate with the maximum amplitude. Standing waves have different frequencies called harmonics. The lowest standing wave frequency is called the fundamental
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Lab 2-Doppler Effect XXX-XXXX Course Number: SCI 110 Professor: Karma Pace-McDuffy Due Date: 01/27/2011 Doppler Effect 1 Objectives Measure the detector frequency for waves emitted from a slowly moving source as that source is approaching the detector. (Exploration 1) Calculate the detector frequency for waves emitted from a slowly moving source as that source is moving away from the detector. (Exploration 2) Sketch the wave-front patterns for wave sources with various source
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measurements. 2. To use Lissajous figures to take frequency measurements. LIST OF REQUIREMENTS Equipment 1. General purpose oscilloscope (10MHz) 2. Function generators (1 Hz to 1 MHz) 3. Digital multimeter THEORY Lissajous patterns are formed when you combined periodic waves moving back and forth with periodic waves moving up and down. This exhibit does this electronically allowing the visitor to control the frequency of the X and Y motions independently. The resulting
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the highest modulating frequency is 10 kHz? a) 10 b) 15 c) 7 7) 14 6. (Nov 1996) the maximum power suggested by KBP on
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Mostly due to the fact that recordings made with semi-professional tape recorders give no information on the occurrence of ultrasonic frequencies. In addition‚ quality of recordings could be diminished by the presence of resonance and background noise. The living arrangements of the animals also made it difficult to identify the caller and to determine the social significance of the vocalizations
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the reflections of a room. More recently‚ rooms designed to reduce reflection and external noise in radio frequencies have been used to test antennas‚ radars‚ or electromagnetic interference. Anechoic chambers range from small compartments the size of household microwave ovens to ones as large as aircraft hangars. The size of the chamber depends on the size of the objects to be tested and the frequency range of the signals used‚ although scale models can sometimes be used by testing at shorter wavelengths
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dB at 11GHz‚ consuming 18mA from the 1.8V supply. The paper also discusses design considerations such the effects of layout on frequency tuning and noise. iout Vbias Lg Vin Rs Ls M1 Rs Vin M2 Lg gmVgs i2ng gg Cgs Vgs iout i2nd Ls I. I NTRODUCTION Rapid evolution of wireless communication has resulted in a continuous trend towards utilizing higher frequencies for wideband communication applications. CMOS technology is of major interest for its low cost and high level of integration.
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*37262* Printed in Switzerland Geneva‚ 2012 ISBN 978-92-61-14021-2 Edition of 2012 Radio Regulations Resolutions and Recommendations 3 E Radio Regulations Resolutions and Recommendations Edition of 2012 Radio Regulations Resolutions and Recommendations Edition of 2012 © ITU 2012 All rights reserved. No part of this publication may be reproduced‚ by any means whatsoever‚ without the prior written permission of ITU. Note by the Secretariat This revision of
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numerically‚ including presentation of data in tables and calculation of statistics for central tendency‚ variability‚ and distribution. Methods are also presented for displaying data graphically‚ including line graphs‚ bar graphs‚ histograms‚ and frequency polygons. The description and graphing of study data result in better analysis and presentation of data. © Index terms: Data analysis Statistical analysis Published online before print 10.1148/radiol.2253012154 Radiology 2002; 225:622– 628 1
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water‚ with a tall glass tube open at both ends (the water level with act as the closed end). 2. Determine the room’s air temperature‚ and also measure the diameter of the glass tube. Record the data. 3. Select a tuning fork and record the frequency (in Hz) in the data table. Record the data. 4. Strike the tuning fork against a rubber stopper‚ and hold it just above the opening of the glass tube. Raise or lower the glass tube/fork until the loudest sound is heard. 5. Once you hear the
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