Assignment 7 spring 2012

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Unformatted text preview: Give numeric values for all positions, heights and widths. (Graph paper might help.) (b) Graph the kinetic energy density as a function of x at (i) t=0 s and (ii) t=2 s. (c) Graph the potential energy density as a function of x at (i) t=0 s and (ii) t=2 s. (d) What are the total kinetic energy and the total potential energy at (i) t=0 s and (ii) t=2 s? (e) What is the total energy of the string at (i) t=0 s and (ii) t=2 s? Is energy conserved? 2. Superposition and Energy. Consider two triangular pulses of width W and height +A, which are launched from opposite ends of a string toward each other. The string tension is τ and mass per unit length is µ. (a) What is the total energy of each pulse? What is the total energy of the string when the pulses are widely separated? Physics 2214, Spring 2012 1 Cornell University TA's Name:_____________________________________Section: ____ Your Name: ____________________________________ (b) What is the total energy of the string at the instant when the two pulses are completely overlapping? (Hin...
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This note was uploaded on 02/27/2013 for the course PHY 2214 taught by Professor Davis during the Spring '12 term at Cornell University (Engineering School).

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