यदि एक तनी हुई डोरी में तनाव 4% बढ़ा दिया जाए, तो उसमें उत्पन्न अनुप्रस्थ तरंगों की चाल में कितने प्रतिशत की वृद्धि होगी?

For a travelling harmonic wave y(x, t) = 2.0 cos 2π(10 t - 0.0080 x + 0.35), where x and y are in cm and t in s. The phase difference between oscillatory motion of two points separated by a distance of 0.5 m is:

The equation of a plane progressive wave is given by y = 5 cos π (200t - x150), where x and y are in cm and t is in seconds. Find the wave velocity in m/s.