A transverse sinusoidal wave on a string has a period T = 39.0 ms and travels in the negative x direction with a speed of 30.0 m/s.

T39.0xtx4.50

(a) What is the amplitude of the wave? 

 m 

(b) What is the phase constant? 

 rad 

(c) What is the maximum transverse speed of the string? 

 m/s 

(d) Write the wave function for the wave. (Use the form Asin(kx + ωt + ϕ). Round all coefficients to three significant figures.) 

y(x, t) =