017 10.0 points A string is stretched to a length of 515 cm and both ends are xed. If the density of the string is 0.011 g/cni, and its tension is 1030 N, what is the funda- mental frequency? Answer in units of HZ. 018 10.0 points The human ear canal is about 2.7 cm long and can be regarded as a tube open at one end and closed at the eardrum. What is the fundamental frequency around which we would expect hearing to be most sensitive? Assume the speed of sound in air to be 339 m/s. Answer in units of kHz