Frequency and Volume of Sound Waves Exp 11.1 Physics Lab Partners: 1/28/12 Object: To see how wave length‚ speed‚ and temperature affect frequency Supplies: * 2 six inch pieces of copper pipe and 1 four inch piece * Freezer * Hot tap water * Bowl * Paper towels Procedure: 1. Hold one of the six inch pieces of pipe in hand and plug the bottom with finger 2. Blow into the pipe until you find the right angle to create a tone 3. Vary the force with which you
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Scattering. Although the property was originally applied to the blue sky‚ it was eventually connected to aerogels. It turns out‚ light is not scattered evenly by the aerogel. Instead‚ shorter wavelengths are scattered more than the longer ones. As a result‚ more blue light is scattered compared to the longer wavelengths of visible light. With this conclusion‚ the ambiguous nature of the physical existence of aerogels became
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3. It is diffracted when grazing over an obstacle. A small shadow area created when some of the energy is redirected. 4. The beam can be reflected from relatively smooth terrain and water surfaces. The criterion of smoothness depends on the wavelength of the signal. 5. At 6 to 8GHz frequency band‚ rain attenuation is not a problem. But for frequencies 11GHz and above‚ rain attenuation is very serious. The amount of attenuation depends upon the rate of rainfall‚ the size of the drops and length
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received analog signal‚ such as through a microphone‚ and digitize it for use by the computer. A higher sampling rate provides a better quality reproduction than a lower sampling rate. 12. Electromagnetic Wave: refers to the complete range of wavelengths of
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Bibliography- World Wide Web- 1. Laws. The Benefits of Fertiliser [Internet]. Available from: http://www.agrium.com/about_us/benefits_of_fertiliser.jsp (Accessed 7th of October‚ 2013). 2. Environmental benefits of using fertilisers [Internet]. Available from: http://www.agroservicesinternational.com/Environment/Benefits.html (Accessed 7th of October‚ 2013). 3. (2002). Burke ’s Backyard > Fact Sheets > Pansies [Internet]. Available from: http://www.burkesbackyard.com.au/2002/archives
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Nature of Waves Vibrations or oscillations are closely related to waves. Waves are created whenever objects vibrate or oscillation. Periodic Motion * A repeated motion that occurs back and forth over the same path at regular intervals. Examples: * A Child on a swing * A wrecking ball swaying to and fro * A swinging pendulum of a grandfather clock Simple Harmonic Motion (SHM) * Is a type of motion along a straight path in which the acceleration is proportional to the displacement
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The last reason of alcohol drinking among the youth in Hong Kong is tension reduction and it is the most common excuse among them. From a survey result conducted in 2008 by The Hong Kong Federation of Youth Group‚ about 30% of students increase their pressure index during the beginning of each new academic year. It was found that the high consumption of alcohol is related to the high level of pressure index. And the frequency of drinking depends on how early the students have experienced drinking
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PHY 101 Lab Report Waves Lab Purpose The purpose of this laboratory experiment is to “investigate how the vibrating source affects selected characteristics of the sound produced” (Giancoli‚ 2006). Materials The following materials were used in the completion of this laboratory experiment: * Meter stick * Two paper towel rolls / cardboard tubes * Scissors * Two rubber bands * Wax paper * Transparent tape * Flashlight * Balloon Procedure Part 1:
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tomb (TT277) from the 19th dynasty (c. 1293-1185 BC) (Fig. 1) which belongs to Amenemonet (the divine father of the temple of King Amenhotep III) at Qurnet Murai necropolis‚ western Luxor (about 670 km south of Cairo). Fig. 1. View of the wall decorations of the tomb of Amenemonet (TT 277)‚ Qurnet Murai necropolis‚ Luxor. 2.2. Visual observations Preliminary observations on the samples were per- formed using an Olympus SZ-40 stereomicroscope (10 and 20 objectives) equipped with an Olympus DP10 digital
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1. What is rf technology? A. The technology in which the parameters such as amplitude‚ phase and frequency of radio frequency waves are changed so as to transmit and receive the information is known as RF technology or radio frequency technology. In this‚ the electromagnetic waves that lie in the range of 3 khz to 300 Ghz are used for the wireless communication between the two devices. The signal is modulated at the transmitter end and then the antenna converts this electrical signal into the radio
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