# UCD PHY 7C - LECTURE NOTES (2 pages)

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## LECTURE NOTES

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## LECTURE NOTES

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Pages:
2
School:
University of California, Davis
Course:
Phy 7c - General Physics
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Physics 7C DLM 01 Overview DLM 01 Model Simple Harmonic Motion Act 8 1 1 A Review of Simple Harmonic Motion Learning Goals To interpret the mathematical expression y t A sin 2 t T To understand how this expression describes the motion of an oscillating object To understand the meaning and function of the fixed phase constant Model Plane Waves 90 min Act 8 1 2 What Exactly is a Wave 50 min Learning Goals Clearly establish how a wave differs from an oscillation Becoming familiar with the independent parameters of waves and what determines their values Understanding polarization of waves For harmonic waves understanding why wavelength is a dependent parameter General Announcements Read the SHM Supplement and the first portion of the Course Notes on Waves both found on the course web page Download and print the Course Notes if you want a hard copy They will not be sold at Navin s or the Bookstore Be sure to regularly check the course web page for announcements regarding quizzes etc FNTs Physics 7C DLM 01 For scenarios 1 and 2 answer the following questions i Exactly what is oscillating in the medium ii Exactly what is moving that makes this a wave note this is distinct from i above iii Exactly what determines the wave speed The amplitude How could you change these 1 Application Answer i ii and iii to describe both a a 2 D wave on the surface of water created by dropping in a stone and b a continuous harmonic wave caused by a swimmer bobbing up and down 2 Application Answer i ii and iii for to describe a 3 D sound wave created by a person playing a flute 3 Application Explain the difference between the motion of air molecules caused by the wind at the beach to the motion of the air particles caused by sound waves created by the pounding surf in language that someone who has never taken physics could understand 4 Solidification A machine tugs sideways on a horizontal elastic rope with a frequency of 5 Hz A graph of the transverse displacements of this rope wave at t 10 0

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