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The human ear canal is approximately 2.5 cm5 tq-v;ubu6mw long. elzlnvv xrc1g.4qv 22 (2nsmlq:*.df.x j8wcIt is open to the outside and is closed at the other end by the eardrum. Estimate the frequencies (in thec xq4.qj.en v:svm xr lg2d*z82n2cv w(1l .lf audible range) of the standing waves in the ear canal. What is the relationship of your answer to the information in the graph of Fig. 12–6? $f_1$ = Hz $f_3$ = Hz $f_5$ = Hz