What is u, the mass per unit length of the string? Learning Goal: Express your answer in kilograms per meter to three significant figures. A cellist tunes the C string of her instrument to a fundamental frequency of 65.4 Hz . The vibrating portion of the string is 0.600 m long and has a mass of 14.4 g . AEd A. With what tension must she stretch that portion of the string? H = kg/m B. What percentage increase in tension is needed to increase the frequency from 65.4 Hz to 73.4 Hz , Submit Request Answer corresponding to a rise in pitch from C to D? Part C To determine the wave speed from purely kinematic quantities, you need to know the wavelength of the wave. What is the wavelength > of the fundamental mode in the C string of the cello? Express your answer in meters. AEQ C