During a particular routine, a gymnast uses a 0.0010-kg ribbon. The 2.0-m-long ribbon is held with one hand and then is shaken in a small up-and-down motion generating a wave. The wave generated has a wavelength of 0.20 m and a frequency of 4.0 Hz. What is the tension in the gymnast's ribbon? If the tension then increases, what will happen to the wavelength?