A Wave Is Traveling with a Speed V Along the X

question 19

Multiple Choice

A wave is traveling with a speed v along the x axis in the positive direction. The upper graph shows the displacement y versus the distance x for a given instant of time. The lower graph shows the displacement y versus the time t for any given point x. From the information in the graphs, what is the wave speed v?

• A) 8.0 m/s
• B) 4.0 m/s
• C) 6.0 m/s
• D) There is not enough information to solve the problem.
• E) None of these is correct.

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Definitions:

Apneic Episodes

Periods during which breathing stops or is markedly reduced during sleep.

RDS

Respiratory distress syndrome, a condition often seen in premature infants causing them difficulty in breathing due to undeveloped lungs.

COPD

Chronic Obstructive Pulmonary Disease, a progressive lung disease characterized by increasing breathlessness.