shuts up. You drift off again‚ but ten minutes later the alarm returns‚ more insistent. It won’t be so easily pacified this time; the loose sensory netting inside your pillow will keep the noise going until it detects alpha waves in drastically higher numbers than theta waves. Or until it gets the automated password from the shower. Sighing‚ you roll out of bed‚ pull your Computing ID (CID) card from the alarm unit‚ and stumble out of the bedroom. Pausing briefly to drop your CID into your desktop
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volume = cm3‚ ft3 Type of wave: heat‚ sound‚ magnetic‚ light. -All waves carry energy from one location to another Sound waves (acoustic waves): Travels through a medium Are mechanical Are longitudinal Generally travels in a straight line Are best described as a series of compressions and rarefactions. Diagnostic ultrasound: uses mechanical and longitudinal waves. Acoustic propagation
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Jiawei Huang 37154135 Fourier Transform Assignment 1. Fourier transform of sine wave (code): import numpy as np import matplotlib.pyplot as plt from scipy.fftpack import fft‚fftfreq dt = 0.01 time = np.arange(0‚5.‚dt) f_1 = 3. a_1 = 2.3 y = a_1*np.sin(2.*np.pi*time*f_1) plt.plot(time‚y) plt.xlabel("Time t [s]") plt.ylabel("Wave") plt.title("Wave Signal") plt.show() n = time.shape[-1] transform = (fft(y)[:n/2]) * 2./n frequency = fftfreq(n‚time[1]-time[0])[:n/2]
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Include the following in your paper: A minimum of one reference is required. What caused the natural event? Would the effects of this event be any different if it occurred at a high or low tide? If so how? How does this event change the wave action of the ocean? Which ocean currents (deep and surface) pass near or through the disaster impact area? Is the disaster affected by surface or deep ocean currents? If so‚ how? SCI 209 Week 4 Learning Team Assignment Outline Begin
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DOPPLER SHIFT Doppler is the apparent change in wavelength (or frequency) of an electromagnetic or acoustic wave when there is relative movement between the transmitter (or frequency source) and the receiver. Summary RF Equation for the Two-Way (radar) case 2(VXmtr % VTgt) fXmt f Rec ’ fXmt % fD ’ fXmt % c Summary RF Equation for the One-Way (ESM) case V f f Rec ’ fXmt % fD ’ fXmt % Xmtr or Rec Xmt c Rules of Thumb for two-way signal travel (divide in half for one-way ESM signal
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formation is on the shore but still close enough to the ocean that some of the water from the waves are able to advance past the larger rocks and surround the smaller rocks while the sides of the formation jet out into the water. The dark blue-green ocean water is crashing against the brown rocks causing the white waves to jet straight up in the air. There are white caps in the middle of the ocean and larger waves closer to shore displaying a rough and windy day. The sly is a royal blue
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Physics notes – Interactions of light and matter Young was able to explain this result as a wave-interference phenomenon – the double-slit interference pattern demonstrates the wave-like nature of light. Free download and print from www.itute.com ©Copyright 2009 itute.com Explaining the interference pattern using the wave model Light has been described both as a particle and as a wave. Isaac Newton (~1665) made up a particle model of light to explain many of the known behaviours
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THIS FILE DOWNLOADED FROM THE IB NOTES SITE: http://ibnotes.tripod.com/ TOPIC 2— MECHANICS FOUNDATIONS: • • • Displacement— A measured distance in a given direction— tells us not only the distance of an object from a particular reference point‚ but also the direction from the reference point— is a vector. Velocity— Is speed in a given direction‚ and is also a vector. Acceleration— is the rate of change of velocity in a given direction (velocity/time). The unit in SI is metres per second
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properties of a wave and a particle. Its wave-like properties are best shown in its propagation while the particle-like properties in the emission and absorption of light.[1] As light behaves like a wave‚ superposition is observed between interacting waves. Superposition of waves is the addition of waves that travel across the same medium. The resulting wave from this addition has amplitude at a particular point that is the algebraic sum of the amplitudes of its constituent waves.[3] This superposition
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floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave’s wavelength is 10 meters. What is the wave’s speed? A) 2 m/s B) 40 m/s C) 10 m/s D) 20 m/s E) more than 40 m/s 2) The Doppler effect is characteristic of A) light waves. B) sound waves. C) water waves. D) all of the above choices E) none of the above choices 3) During a single period‚ the distance traveled by a wave is A) one wavelength. B) two wavelengths. 1) 2) 3) C) one-half wavelength
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