Question 5

A traveling wave on a string is described by: y = (10 cm) cos[(4 m⁻¹)x + (2π s⁻¹)t]. Which of the following statements are correct?

• a.    The amplitude of the wave is 4 m.
• b.    The wave travels in the positive x-direction.
• c.    The wave travels in the negative x-direction.
• d.    The wave travels in the positive y-direction.
• e.    The wave travels in the negative y-direction.
• f.    The speed of propagation of the wave is /2 m/s.

• A.    a,b and f
• B.    a,c and f
• C.    c and f
• D.    d and f
• E.    a,e and f
• F.    e and f

Formula Sheet

Question 4

Question 6

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