Question Details: A cowgirl ties one end of a 10.0-m-long rope to a fence post and pulls on the other end so the rope is stretched horizontally with a tension of 140 N. The mass of the rope is 0.800 kg. a) What is the speed of transverse waves on the rope? b) If the cowgirl moves the free end up and down with a frequency of 1.20 Hz, what is the wavelength of the transverse waves on the rope? c) The cowgirl pulls harder on the rope so that the tension is doubled to 280 N. With what frequency must she move the free end of the rope up and down to produce transverse waves of the same wavelength as in part (a)? ---- For part A, I tried using µ = mass / length = 0.08kg/m then i tried to solve for V using v = sqrt(F/µ), but my answer, 0.024m/s is incorrect, according to mastering physics.