Sound enters the ear, travels through the auditory canal, andreaches the eardrum. The auditory canal is approximately a tubeopen at only one end. The other end is closed by the eardrum. Atypical length for the auditory canal in an adult is about2.8 cm. If the speed of sound is344 m/s. What is the fundamental frequencyof the canal? (Interestingly, the fundamental frequency is in thefrequency range where human hearing is most sensitive.)

f is prop to m1xm2 double m1 double force

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

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