Homework 19

# Homework 19 - m. 006 (part 4 oF 5) 10.0 points What is the...

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lim (kl9356) – Homework 19 – Weathers – (17104) 1 This print-out should have 9 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Radio waves travel at the speed oF light: 3 × 10 5 km / s. What is the wavelength oF radio waves re- ceived at 87 . 7 MHz on your ±M radio dial? Answer in units oF m. 002 10.0 points A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 41 . 6 vibrations in 34 . 9 s. Also, a given maximum travels 428 cm along the rope in 8 . 7 s. What is the wavelength? Answer in units oF cm. 003 (part 1 oF 5) 10.0 points The wave Function For a linearly polarized wave on a taut string is y ( x, t ) = A sin( ω t - k x + φ ) , where A = 0 . 6 m, ω = 7 . 8 s - 1 , k = 6 . 3 m - 1 , φ = 0 . 48, t is in seconds and x and y are in meters. What is the speed oF the wave? Answer in units oF m / s. 004 (part 2 oF 5) 10.0 points What is the vertical displacement oF the string at x 0 = 0 . 14 m, t 0 = 0 . 2 s? Answer in units oF m. 005 (part 3 oF 5) 10.0 points What is the wavelength? Answer in units oF
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Unformatted text preview: m. 006 (part 4 oF 5) 10.0 points What is the Frequency oF the wave? Answer in units oF Hz. 007 (part 5 oF 5) 10.0 points What is the maximum magnitude oF the transverse speed oF the string? Answer in units oF m / s. 008 10.0 points A light string oF mass per unit length 10 . 3 g / m has its ends tied to two walls separated by a distance equal to three Fourths the length L oF the string as shown in the fgure. A mass m is suspended From the center oF the string, applying a tension in the string. The acceleration oF gravity is 9 . 8 m / s 2 . 3 L 4 m g L 2 θ What size mass should be suspended From the string to produce a wave speed oF 74 . 5 m / s? Answer in units oF kg. 009 10.0 points Transverse waves with a speed oF 42 . 7 m / s are to be produced in a taut string. A 5 . 38 m length oF string with a total mass oF 0 . 0645 kg is used. What is the required tension? Answer in units oF N....
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## This note was uploaded on 09/07/2010 for the course PHYS 1710 taught by Professor Weathers during the Fall '08 term at North Texas.

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