7CDLM03_201003ActivSheets

7CDLM03_201003ActivSheets - Physics 7C DLM 03 Overview DLM...

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Physics 7C DLM 03 Overview DLM 03 Model: Plane Waves Act 8.1.5 Phase Chart Representation of a Wave (~20 min) Learning Goals: Solidify idea of the total phase Φ (x,t) Introduction to Phase Charts representation Act 8.1.6 Solidifying Plane Waves: FNTs 2-6 (No Activity Sheet) (~70 min) Learning Goals: Understand how to separately analyze relevant parts of the wave equation Understand how to use apply the ideas of the Plane Waves model to a physical situation Act 8.1.7 Wavefront Representation of a Wave (~50 min) Learning Goals: Understand that a sound wave is fluctuating pressure in a medium Understand that energy is transmitted via waves Understand the relationship between the power of a wave and the energy of a wave Understand the relationship between the power of a wavefront and the intensity of a wavefront Reading Assignment Start reading the second portion of the Course Notes (8-2) on Superposition and Interference. A reminder: You may only miss one DLM. You may make up in another lab up to three times in the quarter.
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Physics 7C Activity 8.1.5 DLM 03 Phase Chart Representation of a Wave Just as an energy-system diagram is useful in helping us work through conservation of energy questions/problems, and a momentum chart is useful in helping us work through conservation of momentum questions/problems, so is a phase chart useful for questions and problems involving wave phenomena. The phase chart , like an energy-system diagram, helps us keep track of what we know about the situation and organize the information in a convenient manner. We will use the phase chart (right) in analyzing and talking about wave phenomena. The cells are to be filled out with whole numbers, fractions, or decimals. Phase chart for a single wave t T 2 π ± x λ 2 π φ Φ Unit circle Wave 1 For: t = x = 1) Open the applet Waveequation.html in the 7C folder on your computer. Set the period to its maximum value of 10 seconds and the phase to 0.25*2 π . Note that the x=0m location starts with at the maximum displacement of 25m. What is the total phase at t=0s and x=0m? Explain why this makes sense. The
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This note was uploaded on 11/15/2010 for the course PHY PHY07C taught by Professor David during the Winter '09 term at UC Davis.

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7CDLM03_201003ActivSheets - Physics 7C DLM 03 Overview DLM...

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