# PhyIIHW1 - hopkins(tlh982 HW01 criss(4908 This print-out...

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hopkins (tlh982) – HW01 – criss – (4908) 1 This print-out should have 19 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points At t = 0, a transverse wave pulse in a wire is described by the Function y = 5 e - x 2 / 2 , where x and t are given in SI units. Which Function describes this wave iF it is traveling in the negative x direction with a speed oF 4 . 5 m / s? 1. y = 5 e - ( x 2 - 4 . 5 t ) / 2 2. y = 5 e - x 2 / 2 + 4 . 5 t 3. y = 5 e - ( x - 4 . 5 t ) 2 / 2 4. y = 5 e - ( x 2 +4 . 5 t ) / 2 5. y = 5 e - x 2 / 2 - 4 . 5 t 6. y = 5 e - ( x +4 . 5 t ) 2 / 2 7. y = 5 e - x 2 / 2 002 10.0 points A carbon steel piano wire 1 m long with a cross-sectional area oF 2 × 10 - 6 m 2 and mass 0 . 1 kg is stretched 30 mm. ±or carbon steel, the Young’s modulus is 2 × 10 11 N / m 2 . Determine the speed oF transverse waves on the string. Answer in units oF m / s. 003 (part 1 oF 4) 10.0 points A traveling wave propagates according to the expression y = (5 . 55 cm) sin[(1 . 98 cm - 1 ) x - (2 . 79 s - 1 ) t ] , where x is in centimeters, and t is in seconds.

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## This note was uploaded on 09/03/2009 for the course PHY PHY 2049 taught by Professor Robertr.criss during the Fall '08 term at University of South Florida.

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PhyIIHW1 - hopkins(tlh982 HW01 criss(4908 This print-out...

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