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2010 PHYSICS 002C Lecture 05A

# 2010 PHYSICS 002C Lecture 05A - PHYSICS 002C Lecture 05...

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PHYSICS 002C Lecture 05 April 07, 2010 Serway and Jewett Chapter 13.4-6 Mechanical Waves Clicker Q1: The wave velocity in a string 100 meters long with a total weight of 0.1kg and under a tension of 10 N is a) 0.1 m/s; b) 100 m/s; c) 1 m/s; d) 10 m/s; e) 0.01 m/s. Clicker Q2: A traveling wave pulse in a string reflects off a fixed point at the end of the string a) in phase; b) out of phase; c) sans phase; d) meta phase; e) inter phase. Clicker Q3: What made the fireman jump off the rope in my demo? a) air currents; b) loss of balance; kc Memonic for c) transfer of energy and momentum from the student who hit the end of the rope 80 feet away; d) congranulated hyperfrimousness from the qualitator; e) beaminatious applications of the stickulous to the twistificated ropinishous cordulation. Chap 13.4 – The speed of transverse traveling waves depends on the properties of the medium, the tension T and the mass per unit length . The wave speed is obtained from F=ma : Tension x dx y d T F 2 2 ; x m ; 2 2 dt y d a

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