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problem15_79

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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15.79: a) . 2 1 ) 2 1 ( 2 2 k = = = t y μ μ m mv x K u y b) so and ) sin( ωt kx ωA t y - = ). ( sin 2 1 2 2 2 ωt kx A μω u k - = c) The piece has width , height and y x x x and so the length of the piece is 2 1 2 2 1 2 2 1 ) ( + = + x y x x y x x , 2 1 1 2 + x y x where the relation given in the hint has been used. d) [ ] . 2 1 ) ( 1 2 2 2 1 p = - + = x y F x x x F u x y e) ), sin( ωt kx kA x y - - = and so ) ( sin 2 1 2 2 2 p ωt kx A Fk u - = and f) comparison with the result of part (c)with , 2 2 2 2 F μ ω v ω k = = shows that for a sinusoidal wave . p k uv u = g) In this graph, p k and u u coincide, as shown in part

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problem15_79 - 15.79 a uk b y t K x 2(1 2 mvy m 1 2 y t 2 A...

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