a. Show that if the maximum positive displacement of a sinusoidal wave occurs at distance...

a. Show that if the maximum positive displacement of a sinusoidal wave occurs at distance x0 cm from the origin when t = 0, its initial phase angle φ0 is given by

 

where the wavelength λ is in centimeters.

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b. Determine the initial phase and sketch the wave when λ = 10 cm and , and cm.

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c. What are the appropriate initial phase angles for (b) when a cosine function is used instead?