Four waves are described by the following equations, where distances are measured in meters and times...
Four waves are described by the following equations, where
distances are measured in meters and times in seconds.
I. y = 0.12 cos(3x - 21t)
II. y = 0.15 sin(6x + 42t)
III. y = 0.13 cos(6x + 21t)
IV. y = -0.23 sin(3x - 42t)
Which of these waves have the same period?
answer was I and III, and also II and IV
can someone explain this because i'm lost
Homework Answers
Equation of wave has form
Here k is wavenumber and A is amplitude of wave
And omega is angular frequency of wave
So for 1 and 3 we have same value omega so they have same time period similarly 2 and 4 have same time period.
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