Atypical human vocal cord has a mass of about 5.0 g and a length of about 1.5 cm. how much tension must a muscle exert on a vocal cord to produce a sound vibration of 120 hz? (assume that this is the fundamental frequency of the vocal cord.)

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)