v PartA A piano tuner stretches a steel piano wire with a tension of 765 N.. The steel wire has a length of 0.400 m and a mass of 3.00 g . What is the frequency f; of the string's fundamental mode of vibration? Express your answer numerically in hertz using three significant figures. View Available Hint(s) - N O? fi= Hz v PartB What is the number n of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to f =16 kHz? Express your answer exactly. View Available Hint(s) (')