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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Definitions:

Necrosis

The demise of cells or tissues within the body, caused by illness, harm, or insufficient blood flow.

Infarct

An area of dead tissue resulting from the obstruction of blood supply to that area, commonly associated with heart attacks and strokes.

Hgb

Hemoglobin, a protein in red blood cells that carries oxygen throughout the body.

EKG

Electrocardiogram, a test that measures the electrical activity of the heart to detect heart abnormalities.