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7CDLM02_201003ActivSheets

# 7CDLM02_201003ActivSheets - Physics 7C DLM 02 Overview DLM...

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Physics 7C DLM 02 Overview DLM 02 Model: Plane Waves Act 8.1.3 Representing a 1-D Harmonic Wave Graphically (~90 min) Learning Goals: Understanding that the displacement of the medium when a harmonic wave is present depends on two parameters: position and time Understanding that it takes two graphs, one as displacement of medium vs. time and one as displacement of medium vs. distance to completely represent a wave graphically Understanding that the graph of a harmonic wave as a function of either position or time is sinusoidal (i.e., corresponds to a sine or cosine function) Understanding that it takes a mathematical function of two variables (e.g., y and t) to represent a wave (i.e., a wave function) Act 8.1.4 Waves and the Wave Equation (~50 min) Learning Goals: Solidify ideas about wave parameters and graphing waves Understand that y(x,t) - y 0 = Asin 2 π t T ± 2 π x λ + φ ⎟ = Asin Φ (x,t) is the 1-D harmonic wave function and that when graphed as a function of either x or t, while holding the other variable constant, a sine wave results. Begin understanding the total phase Φ ( x,t) Reading Assignment Read the first portion of the 7C Course Notes on Waves. (available online)

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