Problem 1 Pitch-perfect Guitar A guitarist breaks the highest string on her guitar. If a new string is a steel wire of mass density 7.8 x 103kg/m3 and radius of 0.120 mm, what tension must the string be under if it is to produce the frequency 330 Hz as its fundamental (first harmonic, one antinode) frequency? The distance between the wire's two attachment points on the guitar is 640 mm