Two Waves Travel Simultaneously Through the Same Medium

question 5

Multiple Choice

Two waves travel simultaneously through the same medium. The first wave is described by y₁(x,t) = (2.00 cm) cos[kx-ωt] and the second wave by y₂(x,t) = (3.00 cm) cos(kx-ωt+δ) . If the resulting wave has an amplitude 4.00 cm, what is a possible value of δ?

• A)0.782 rad
• B)0.250 rad
• C)0.644 rad
• D)0.833 rad
• E)1.32 rad

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