Two Waves Are Described by Y₁ = 6 Cos 180t

question 4

Multiple Choice

Two waves are described by y₁ = 6 cos 180t and y₂ = 6 cos 186t, (both in meters) .
With what angular frequency does the maximum amplitude of the resultant wave vary with time?

• A) 366 rad/s
• B) 6 rad/s
• C) 3 rad/s
• D) 92 rad/s
• E) 180 rad/s

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