waves

Question: The displacement $y$ of a particle in a medium can be expressed as: $y={{10}^{-6}}\sin (100t+20x+\pi /4)m,$ where t is in second and x in meter. The speed of wave is

1) 2000 m/s

2) 5 m/s

3) 20 m/s

4) $5\pi \text{ }m/s$

Solution:

Explanation: No Explanation

Progressive Waves

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