problem16_70

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

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16.70: (See Problems 16.66, 16.74, 16.67). a) In a time t , the wall has moved a distance t v 1 and the wavefront that hits the wall at time t has traveled a distance vt , where , 0 0 λ f v = and the number of wavecrests in the total distance is . 0 1 ) ( λ + t v v b) The reflected wave has traveled vt and the wall has moved , 1 t v so the wall and the wavefront are separated by . ) ( 1 t v v - c) The distance found in part (b) must contain the number of
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Unformatted text preview: reflected waves found in part (a), and the ratio of the quantities is the wavelength of the reflected wave, 1 1 v v v v +-λ . d) The speed v divided by the result of part (c), expressed in terms of 1 1 is v v v v f f +-. This is what is predicted by the problem-solving strategy. . e) 1 1 1 1 2 v v v v v v v f f f--+ =-...
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