### What are the frequencies of next two harmonics

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Q. A plane diving with constant speed at an angle of 51.7° with the vertical, releases a package at an altitude of 437 m. The package hits the ground 2.93 s after release. How far horizontally does the package travel?

Q. The auditory canal, leading to the eardrum, is a pipe closed at one end 3 cm in length. Find the value of the lowest resonant frequency. What are the frequencies of next two harmonics?

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