Answered: How much power the wave may carry?

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How much power the wave may carry?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter13: Mechanical Waves

Section: Chapter Questions

Problem 67P

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Concept explainers

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.

Question

One of the guitar wire mass is 0.5 g and length 30.0 cm is stretched with a tension of 20.0 N. A wave with frequency 85.0 Hz and amplitude 0.8 mm travels along the wire. a. How much power the wave may carry? b. if the wave amplitude is halved What happens to average power?

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