A periodic wave (i.e., a wave pattern that repeats itself) is produced in a stretched string by a mechanical oscillator operating at a frequency of 485 Hz. This means that one point on the stretched string is pushed up and down at a regular frequency. The so-called "oscillator" is the source of the repeating waves. The linear density of the string is 0.00500 kg/m and the wavelength of the periodic wave is 0.0500 m. (a) Knowing the frequency of the source, and the wavelength of the repeating pattern, what is the speed of the wave on the string? m/s (b) What is the tension in the string