I've been working on this problem and I got every part right except part F which asks for tension. A sinusoidal wave is traveling on a string with speed 110 cm/s. The displacement of the particles of the string at x = 23 cm is found to vary with time according to the equation y = (4.9 cm) sin[1.5 - (7.2 s-1)t]. The linear density of the string is 2.2 g/cm. What are (a) the frequency and (b) the wavelength of the wave? If the wave equation is of the form y(x,t) = ym sin(kx - (omega)t), what are (c)ym, (d)k, and (e)Omega? (f) What is the tension in the string? a)f=1.15 Hz b)wavelength = 95.7cm c)Ym=4.9cm d)k=6.52 rad/m e)omega=7.2 rad/s f) my answers so far were 0.00266 N and 0.0000266 N and both were wrong (they seem too low). I tried the equation V = Sqrt(T/u) where T is tension, and u is linear density but I must be making a mistake somewhere.