A guitar string of length 87.5 cm and mass 7.50 grams is plucked with a force of 3.25 N and starts vibrating at a constant frequency of 469 Hz.

2. What is the linear mass density of the string? (Make sure you do the appropriate conversions to get the answer in SI units.)
4. What is the velocity of the waves on this string?
6. What is the wavelength of these waves?