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Resonances of the ear canal lead to increased sensitivity of hearing, as we've seen. Dogs have a much
longer ear canal-5.2 cm-than humans. What are the two lowest frequencies at which dogs have an
increase in sensitivity? The speed of sound in the warm air of the ear is 350 m/s.
A 1700 Hz, 3400 Hz
B. 1700Hz, 5100Hz
C. 3400 Hz, 6800 Hz
D. 3400 Hz, 1 0,200 Hz

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