Here is the equation for a wave on a string under tension: y = (0.025 m) sin(3.Onx + 4.0rt). What is the wave speed (m/s)? 0.25 O 0.21 O 1.3 O 0.75 O 8.0 O 3.5 O 0.50 O 0.018 O 0.025 1.5