Which of these waves have the same period?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
38
Four traveling waves are described by the following
equations, where all quantities are measured in SI units
and y represents the displacement.
I: y = 0.12 cos(3x - 21t)
II: y= 0.15 sin(6x + 42t)
III: y = 0.13 cos(6x + 21t)
IV: y = -0.27 sin(3x - 42t)
Which of these waves have the same period?
O I and II, and also IlIl andIV
O I and IV, and also Il and III
O All of them have the same period.
O I and IlI, and also Il and IV
Transcribed Image Text:Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x - 21t) II: y= 0.15 sin(6x + 42t) III: y = 0.13 cos(6x + 21t) IV: y = -0.27 sin(3x - 42t) Which of these waves have the same period? O I and II, and also IlIl andIV O I and IV, and also Il and III O All of them have the same period. O I and IlI, and also Il and IV
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