A violin string has a length of 0.360 m and is tuned to concert G, with fG = 392 Hz. (a) How far from the end of the string must the violinist place her finger to play concert A, with fA = 440 Hz? cm from the bridge (b) If this position is to remain correct to one-half the width of a finger (that is, to within 0.680 cm), what is the maximum allowable percentage change in the string tension? %