The equation of progressive wave is \( Y=4 \) \( \left\{\pi\left[\frac{t}{5}-\frac{x}{9}\right]+....

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Question The equation of progressive wave is \( Y=4 \) \( \left\{\pi\left[\frac{t}{5}-\frac{x}{9}\right]+\frac{\pi}{6}\right\} \) where \( x \) and \( y \) are in \( \mathrm{cm} \). Which of the following statement is true?
(A) \( \lambda=18 \mathrm{~cm} \)
(B) amplitude \( =0.04 \mathrm{~cm} \)
(C) velocity \( v=50 \mathrm{~cm} / \mathrm{s} \)
(D) frequency \( f=20 \mathrm{~Hz} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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